CN109709727B - Display panel and display device - Google Patents
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- CN109709727B CN109709727B CN201910034084.3A CN201910034084A CN109709727B CN 109709727 B CN109709727 B CN 109709727B CN 201910034084 A CN201910034084 A CN 201910034084A CN 109709727 B CN109709727 B CN 109709727B
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- 238000005516 engineering process Methods 0.000 description 3
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Abstract
The invention provides a display panel and a display device. The display panel includes: a first substrate; a common electrode formed on the first substrate; the second substrate is arranged in parallel and opposite to the first substrate, and an active switch is arranged on the second substrate; the color resistance layer is formed on the second substrate and comprises a plurality of color resistance units, each color resistance unit comprises a plurality of color resistances with different colors, each color resistance comprises a first sub color resistance, a second sub color resistance and a third sub color resistance, and the first sub color resistance, the second sub color resistance and the third sub color resistance are respectively provided with step surfaces with height difference; and a pixel electrode having a step surface corresponding to the step surface. The display panel and the display device can improve the pixel penetration rate and improve the problem of white background picture or color cast.
Description
Technical Field
The invention relates to the technical field of display, in particular to a display panel and a display device.
Background
In recent decades, due to the vigorous development of the photovoltaic industry, computer-related devices have been developed toward light weight, thin profile, power saving, low radiation, and the like along with the development of the photovoltaic industry. The exemplary CRT display is a product that is too bulky and heavy, and has radiation problem, so that it is a time-consuming product for all the society facing light weight, thin thickness and health considerations. Liquid Crystal Displays (LCDs) are Display technologies developed for this purpose. In the first liquid crystal display, since the compensation technique for the phase difference is not well developed, even if so-called "ghost" appears, the colors are mutually smeared, and it is extremely distorted in the phase display technique. The term "phase difference" is generally interpreted as a phase shift state caused by phenomena such as diffraction of light, refraction through different media, and the like due to the fact that crystal grains are arranged in a tilted state after a liquid crystal layer of an LCD screen is energized.
The most currently responsible drawbacks of LCDs are their narrow viewing angle and severe color shift. In response to this problem, researchers have developed several different display modes in recent years to improve the narrow viewing angle. One of them is a Thin-Film Transistor Liquid Crystal Display (TFT LCD) of Multi-domain Vertical Alignment (MVA) which is a new concept of Vertical Alignment, providing a wide viewing angle in terms of vision, high contrast in terms of Display color, high color saturation and fast response time in terms of Display.
The Multi-domain Vertical Alignment (MVA) technology was earlier put into practice for wide viewing angle liquid crystal panels, which uses protrusions to deflect the liquid crystal at an angle when it is at rest, rather than the upright rest state in the exemplary panel, so that when a voltage is applied to change the liquid crystal molecules to a horizontal state for the backlight to pass through, the penetration speed of the backlight is faster, thereby greatly reducing the display time. In addition, the protrusions change the liquid crystal within 20ms, so that the alignment of the liquid crystal molecules allows a wider viewing angle. For example, the viewing angle can be increased by more than 160 degrees.
In an exemplary technical solution, when the MVA mode is used to design a transmissive display, liquid crystals in the display are often arranged in a multi-region manner in order to increase a viewing angle range of a picture display, but the transmittance of the display in a transmissive state is not high due to the multi-region arrangement manner, and a background picture is whitened or color cast occurs, thereby affecting picture quality.
Therefore, it is an urgent technical problem to provide a display panel and a display device that can improve the pixel transmittance and improve the problem of background white or color shift.
Disclosure of Invention
The invention aims to provide a display panel and a display device for improving the white or color cast of a background picture.
The present invention also provides a display panel including:
a first substrate; a common electrode formed on the first substrate; the second substrate is arranged in parallel and opposite to the first substrate, and an active switch is arranged on the second substrate; the color resistance layer is formed on the second substrate and comprises a plurality of color resistance units, each color resistance unit comprises a plurality of color resistances with different colors, each color resistance comprises a first sub color resistance, a second sub color resistance and a third sub color resistance, and the first sub color resistance, the second sub color resistance and the third sub color resistance are respectively provided with step surfaces with height difference; and a pixel electrode having a step surface corresponding to the step surface.
Optionally, a step surface of a pixel electrode corresponding to the first sub color resistor includes a first step, a second step, and a third step, and pitches between the first step, the second step, and the third step and the common electrode are gradually reduced.
Optionally, the step surfaces include a first step surface corresponding to the first step, a second step surface corresponding to the second step, and a third step surface corresponding to the third step, and the first step surface, the second step surface, and the third step surface sequentially form a first pixel light-transmitting area, a second pixel light-transmitting area, and a third pixel light-transmitting area with the common electrode.
Optionally, the ratio of the area of the first pixel light-transmitting region to the area of the second pixel light-transmitting region plus the area of the third pixel light-transmitting region is 4 to 6, and the ratio of the area of the second pixel light-transmitting region to the area of the third pixel light-transmitting region is 1 to 1.
Optionally, the ratio of the area of the first pixel light-transmitting region to the area of the second pixel light-transmitting region plus the area of the third pixel light-transmitting region is 3 to 7, and the ratio of the area of the second pixel light-transmitting region to the area of the third pixel light-transmitting region is 1 to 1.
Optionally, the step surfaces include a first step surface corresponding to the first step, a second step surface corresponding to the second step, and a third step surface corresponding to the third step;
first step face, second step face and third step face with the interval of common electrode is 4.2um, 3.9um and 3.6um in proper order.
Optionally, the display panel further includes a scan line and a data line, the data line and the scan line are connected to the active switch, and the scan line and the data line are vertically intersected;
the first pixel light-transmitting area is arranged on one side of the scanning line, and the second pixel light-transmitting area and the third pixel light-transmitting area are arranged on the other side of the scanning line.
Optionally, the first pixel light-transmitting area includes four sub-pixel electrodes arranged at 2 × 2, and the second pixel light-transmitting area and the third pixel light-transmitting area include three sub-pixel electrodes arranged at 1 × 3, respectively;
the common electrode is provided with a dot-shaped gap corresponding to the middle part of each sub-pixel electrode.
According to another aspect of the present invention, there is disclosed a display panel including:
a first substrate; a common electrode formed on the first substrate; the second substrate is arranged in parallel and opposite to the first substrate, and an active switch is arranged on the second substrate; a color resistance layer formed on the second substrate, and a pixel electrode; the color resistance layer comprises a plurality of color resistance units, each color resistance unit comprises a plurality of color resistances with different colors, each color resistance comprises a first sub color resistance, a second sub color resistance and a third sub color resistance, and the first sub color resistance, the second sub color resistance and the third sub color resistance are respectively provided with a step surface with height difference; the step surface comprises a first step, a second step and a third step, and the distances between the first step, the second step and the third step and the common electrode are gradually reduced;
the step surfaces comprise a first step surface corresponding to the first step, a second step surface corresponding to the second step and a third step surface corresponding to the third step, and the first step surface, the second step surface and the third step surface sequentially form a first pixel light-transmitting area, a second pixel light-transmitting area and a third pixel light-transmitting area with the common electrode; the ratio of the area of the first pixel light-transmitting area to the area of the second pixel light-transmitting area plus the third pixel light-transmitting area is 3 to 7.
According to another aspect of the present invention, there is disclosed a display device including:
a control component;
and the display panel.
The pixel electrode comprises the step stepped surface, and the pixel electrode comprises the step stepped surface with the height difference, so that the effect of dividing the pixel area is generated, the problem that the polarization directions of the pixel areas are the same but the phases are different due to the phase grating effect can be solved, the pixel areas are correspondingly complementary, and even the phases of the pixel areas are the same while the polarization directions are the same; the problem that when light rays emitted from different liquid crystal regions pass through the polarizer, the light rays have the same polarization direction but different phases is solved. Therefore, when the transparent display panel is in a transmission mode, the pixel transmittance is improved, the problem of white background picture or color cast is solved, and the background picture quality of the transparent display panel is improved.
Drawings
The accompanying drawings, which are included to provide an alternative understanding of embodiments of the application, are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the principles of the application. It is obvious that the drawings in the following description are only some embodiments of the application, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. In the drawings:
FIG. 1 is a schematic diagram of a step surface of a pixel electrode of a display panel structure according to an embodiment of the invention;
FIG. 2 is a schematic plan view of a pixel structure of a display panel according to an embodiment of the invention;
FIG. 3 is a schematic cross-sectional view illustrating pixel electrodes with different heights of a display panel according to an embodiment of the invention;
FIG. 4 is a schematic cross-sectional view of a display panel according to an embodiment of the present invention;
FIG. 5 is a V-T plot of a display panel according to an embodiment of the present invention;
FIG. 6 is a gamma curve of a display panel according to an embodiment of the present invention;
FIG. 7 is a schematic view of a method for manufacturing a display panel according to an embodiment of the present invention;
FIG. 8 is a schematic view of a method for manufacturing a display panel according to an embodiment of the present invention;
FIG. 9 is a schematic view of a method for manufacturing a display panel according to an embodiment of the present invention;
FIG. 10 is a schematic view of a method for manufacturing a display panel according to an embodiment of the present invention;
FIG. 11 is a schematic diagram of a display device according to an embodiment of the invention.
Wherein, 1, a display panel; 11. a first substrate; 12. a second substrate; 2. a common electrode; 21. a dotted notch; 3. a pixel electrode; 31. a first step surface; 311. a first pixel light-transmitting region; 32. a second step surface; 321. a second pixel light-transmitting region; 33. a third step surface; 331. a third pixel light-transmitting region; 4. a color resist layer; 40. a color resistance unit; 41. a first sub-color resistance; 42. a second sub-color resistance; 43. a third sub-color resistance; 421. a first step; 422. a second step; 423. a third step; 5. an active switch; 6. scanning a line; 7. a data line; 8. a passivation layer; 9. a spacer; 100. a display device; 200. and a control component.
Detailed Description
Specific structural and functional details disclosed herein are merely representative and are provided for purposes of describing example embodiments of the present invention. The present invention may, however, be embodied in many alternate forms and should not be construed as limited to only the embodiments set forth herein.
In the description of the present invention, it is to be understood that the terms "center", "lateral", "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified. Furthermore, the term "comprises" and any variations thereof is intended to cover non-exclusive inclusions.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used herein, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
FIG. 1 is a schematic diagram of a step surface of a pixel electrode of a display panel structure according to an embodiment of the present invention; FIG. 2 is a schematic plan view of a pixel structure of a display panel according to an embodiment of the invention; FIG. 3 is a schematic cross-sectional view illustrating pixel electrodes with different heights of a display panel according to an embodiment of the invention; FIG. 4 is a schematic cross-sectional view of a display panel according to another embodiment of the present invention; as shown in fig. 1 to 4, the display panel 1 disclosed in the present embodiment includes: a first substrate 11; a common electrode 2 formed on the first substrate 11; a second substrate 12 arranged parallel to and opposite to the first substrate 11, the second substrate 12 being provided with an active switch 5; a color resistance layer 4 formed on the second substrate 12, and a pixel electrode 3, wherein the color resistance layer 4 includes a plurality of color resistance units 40, each color resistance unit 40 includes a plurality of color resistances with different colors, each color resistance includes a first sub color resistance 41, a second sub color resistance 42, and a third sub color resistance 43, and each of the first sub color resistance 41, the second sub color resistance 42, and the third sub color resistance 43 has a step surface with a height difference; the pixel electrode 3 is formed with a step surface corresponding to the step surface.
The pixel electrode 3 comprises the step surface, and the pixel electrode 3 comprises the step surface, so that the effect of dividing the pixel area is generated, the problems that the polarization directions of the pixel areas are the same but the phases are different due to the phase grating effect can be solved, the pixel areas are correspondingly complementary, and even the phases of the pixel areas are the same while the polarization directions are the same; therefore, when the transparent display panel is in a transmission mode, the pixel transmittance is improved, the problem of white background picture or color cast is solved, and the background picture quality of the transparent display panel is improved.
When a Multi-domain Vertical Alignment (MVA) mode is used to design a transmissive display panel, liquid crystals in the display panel are often arranged in a Multi-region manner in order to increase the viewing angle range of the image display, but the arrangement of the Multi-region liquid crystals causes a Phase Grating effect to occur on the panel, thereby affecting the background image quality (such as image blurring) of the transmissive display panel. Here, the phase grating effect means that when light emitted from different liquid crystal regions passes through a polarizer, the polarization directions are the same but the phases are different.
Therefore, the terraces with different gradients can be formed between the pixel electrode 3 and the common electrode 2 through the stepped surface, and the terraces with different gradients formed between the pixel electrode 3 and the common electrode 2 can cause phase delay between the pixel electrode 3 and the common electrode 2, so that the phase delay is beneficial to solving the problems that the polarization directions of pixel regions are the same but the phases are different due to the phase grating effect, and the phase delay is correspondingly complementary, and even the phases of all the pixel regions are the same while the polarization directions are the same.
In an embodiment of the present invention, the step surface includes a first step 421, a second step 422, and a third step 423, and the distances between the first step 421, the second step 422, and the third step 423 and the common electrode 2 are gradually decreased. Of course, if the design structures of the panels are different, the pitches may be sequentially increased, as long as the design requirements are met, so that the light-transmitting areas with the same polarization direction and different phases can be made to approach the targets with the same polarization direction and the same phases through phase retardation.
The horizontal common electrode 2 is formed on the first substrate 11, the pixel electrode 3 is formed on the second substrate 12, the same color resistance unit 40 includes a first step 421, a second step 422 and a third step 423, and the first step 421, the second step 422 and the third step 423 present a step difference, and because the step surfaces of the pixel electrode 3 correspond to the first step, the second step and the third step, a plurality of pixel light-transmitting areas are formed between the pixel electrode 3 and the common electrode 2, and the plurality of light-transmitting areas have a phase delay, the pixel can improve the problem that the polarization directions of the pixel areas are the same but the phases are different due to the phase grating effect, and the corresponding complementation, even the phases of the pixel areas are the same while the polarization directions are the same, thereby improving the pixel transmittance when the transparent display panel is in the transmissive mode, the problem of white background picture or color cast is improved, thereby improving the background picture quality of the penetration type display panel.
In an embodiment of the invention, the step surfaces include a first step surface 31 corresponding to the first step 421, a second step surface 32 corresponding to the second step 422, and a third step surface 33 corresponding to the third step 423, and the first step surface 31, the second step surface 32, and the third step surface 33 sequentially form the first pixel light-transmitting area 311, the second pixel light-transmitting area 321, and the third pixel light-transmitting area 331 with the common electrode 2.
The first, second and third step surfaces 31, 32, 33 and the common electrode 2 sequentially form a first pixel light-transmitting region 311, a second pixel light-transmitting region 321 and a third pixel light-transmitting region 331. The distances between the corresponding first pixel light-transmitting region 311, second pixel light-transmitting region 321, and third pixel light-transmitting region 331 and the common electrode 2 are sequentially reduced. The three pixel light-transmitting areas can generate phase differences, the phase differences generated by the three pixel light-transmitting areas are utilized to delay three phases and are correspondingly complementary, so that the problem that the polarization directions of the pixel areas are the same but the phases are different due to the phase grating effect can be solved, and even the phases of all the pixel areas are the same while the polarization directions are the same; therefore, when the transparent display panel is in a transmission mode, the pixel transmittance is improved, the problem of white background picture or color cast is solved, and the background picture quality of the transparent display panel is improved.
As shown in fig. 1 to 4, a display panel 1 is disclosed as another embodiment of the present invention, including: a first substrate 11, a horizontal common electrode 2 formed on the first substrate 11; the display device comprises a second substrate 12, wherein a plurality of scanning lines and a plurality of data lines are formed on the second substrate 12, and the scanning lines and the data lines are vertically intersected.
A Color Filter on Array (COA) is further formed on the second substrate 12, the Color resist layer includes a plurality of Color resist units 4, each Color resist unit 4 includes three or four Color resists with different colors, and each Color resist of each Color resist unit corresponds to each pixel; taking the color resistances of three colors of RGB as an example, each color resistance unit includes an R color resistance, a G color resistance and a B color resistance, and each R color resistance, G color resistance or B color resistance includes three sub color resistances respectively, that is, each color resistance described in the present invention includes a first sub color resistance, a second sub color resistance and a third sub color resistance with the same color; the first sub color resistor, the second sub color resistor and the third sub color resistor are respectively provided with step surfaces with height difference; the color resistance layer of the second substrate is also provided with a pixel electrode 3, the pixel electrode 3 corresponds to the step surface, and the pixel electrode 3 is provided with a step surface corresponding to the step surface.
Wherein each pixel comprises at least two sub-pixels driven by the same scan line 6 and data line 7, as shown in fig. 2, the pixel comprises a first sub-pixel and a second sub-pixel, and the first sub-pixel and the second sub-pixel are respectively connected to the same scan line 6 and data line 7 through two active switches 5 (such as thin film transistors TFT); wherein each first sub-pixel comprises a first pixel electrode; the second sub-pixel comprises a second pixel electrode and a third pixel electrode which are mutually communicated; the first pixel electrode and the second pixel electrode are not conducted.
The first pixel electrode, the second pixel electrode and the third pixel electrode are all formed on the color resistance layer 4. Specifically, the step surface of one pixel electrode 3 corresponding to the first sub color resistance includes a first step 421, a second step 422, and a third step 423; correspondingly, the pixel electrode includes a first step surface 31 corresponding to the first step 421, a second step surface 32 corresponding to the second step 422, and a third step surface 33 corresponding to the third step 423. The first step surface 31 of the pixel electrode 3 forms the first pixel electrode; the second step surface 32 of the pixel electrode 3 forms the second pixel electrode; the third step 33 of the pixel electrode 3 forms the third pixel electrode; the first pixel transparent region 311, the second pixel transparent region 321 and the third pixel transparent region 331 are sequentially formed with the first common electrode 2.
The distance between the first step surface 31 and the common electrode 2 is Δ nd 1; the distance between the second step face 32 and the common electrode 2 is Δ nd 2; the distance between the third step face 33 and the common electrode 2 is Δ nd 3; the distances are sequentially reduced from the delta nd1 to the delta nd2 to the delta nd 3; of course, the specific structure of the display panel 1 may be different.
FIG. 5 is a V-T plot of a display panel of the present invention; FIG. 6 is a gamma curve of the display panel of the present invention; referring to fig. 5 and 6, as can be seen from fig. 1 to 4, the distance Δ nd1 between the first step surface 211 and the common electrode 11 is 4.2 um; the distance Δ nd2 between the second step surface 212 and the common electrode 11 is 3.9 um; the distance between the third step surface 213 and the common electrode 11 is Δ nd3 is 3.6 um; wherein, the cell gap refers to the thickness of the liquid crystal box, or the distance between the corresponding step surface and the common electrode; in addition, the present invention provides a pitch value, but this does not mean that the pitch of the present invention can only be selected from the above pitch values, and when the display panels are different, the pitch can be changed adaptively.
As shown in fig. 2, the first pixel light-transmitting region 311 is disposed at one side of the scan line 6, and the second pixel light-transmitting region 321 and the third pixel light-transmitting region 331 are disposed at the other side of the scan line 6; the first pixel transparent region 311 includes a plurality of sub-pixel electrodes connected to each other, and the first pixel transparent region 311 includes four sub-pixel electrodes connected to each other and arranged 2 × 2; the second pixel transparent region 321 and the third pixel transparent region 331 also include a plurality of sub-pixel electrodes connected to each other; correspondingly, the second pixel transparent area 321 includes three sub-pixel electrodes arranged 1 × 3 along the extending direction of the data line 7, similarly, the third pixel transparent area 331 also includes three sub-pixel electrodes arranged 1 × 3 along the extending direction of the data line 7, and the second pixel transparent area 321 and the third pixel transparent area 331 are arranged side by side along the scan line 6 to form a 2 × 3 sub-pixel electrode. Correspondingly, a gap sub-9 is formed between every four adjacent sub-pixel electrodes on the array substrate. The spacers 9 can be formed by black color resists, and have multiple functions of supporting box thickness, assisting alignment, shading and the like.
On the array substrate of the display panel 1, each corresponding sub-pixel electrode may be provided with a notch in different directions (or provided with branches slit in different directions), so as to form a multi-domain (domain) display panel with a wide viewing angle. However, instead of providing notches in different directions, a dot notch 21 may be provided in the region of the common electrode 2 on the opposite substrate, a dot notch 21 is provided in the middle of the common electrode 2 corresponding to each sub-pixel electrode, and the corresponding sub-pixel electrode is a planar non-notched pixel electrode having an area larger than that of the dot notch, so as to form a multi-domain wide-viewing-angle pixel surrounding the dot notch at 360 °. In the invention, the common electrode 2 on the first substrate needs to be subjected to a yellow light process to form the dot-shaped notch 21 so as to form a pretilt angle with the spacer 9 on the second substrate side. In an embodiment of the present invention, a ratio of an area of the first pixel light-transmitting region 311 to an area of the second pixel light-transmitting region 321 plus the third pixel light-transmitting region 331 may be 1 to 1, or 1 to 2, and a ratio of an area of the second pixel light-transmitting region 321 to an area of the third pixel light-transmitting region 331 is 1 to 1. Thus, a plurality of pixel light-transmitting areas are formed in a differentiated mode to generate a plurality of fields, and the effect of multi-field division is achieved.
In an embodiment of the present invention, a ratio of an area of the first pixel light-transmitting region 311 to an area of the second pixel light-transmitting region 321 plus the third pixel light-transmitting region 331 may also be 4 to 6, a ratio of an area of the second pixel light-transmitting region 321 to an area of the second pixel light-transmitting region 331 is 1 to 1, and a ratio of an area of the second pixel light-transmitting region 321 to an area of the third pixel light-transmitting region 331 may also be set to be 3 to 4 or 4 to 3. Thus, a plurality of pixel light-transmitting areas are formed in a differentiated mode to generate a plurality of field areas, and the multi-field segmentation effect is achieved, so that when the transparent display panel is in a transmission mode, the pixel transmittance is improved, and the condition that a background picture has color cast is improved; generally, the area of the first pixel transparent region is smaller than the area of the second pixel transparent region plus the area of the third pixel transparent region.
In an embodiment of the invention, a ratio of an area of the first pixel light-transmitting region 311 to an area of the second pixel light-transmitting region 321 plus the third pixel light-transmitting region 331 is 3 to 7, a ratio of an area of the second pixel light-transmitting region 321 to an area of the third pixel light-transmitting region 331 is 1 to 1, and a ratio of an area of the second pixel light-transmitting region 321 to an area of the third pixel light-transmitting region 331 can be set to be 3 to 4 or 4 to 3. Of course, the ratio of the area of the first pixel light-transmitting region 311 to the area of the second pixel light-transmitting region 321 plus the third pixel light-transmitting region 331 can also be 3 to 8. Thus, a plurality of pixel light transmission areas are formed in a differentiated mode to generate a plurality of field areas, so that the multi-field division effect is achieved, an exemplary voltage division mode is replaced, the design aperture opening ratio and the process stability of pixels can be effectively improved, and the parts such as COF (Chip On Flex, or, Chip On Film) and the like used by an external system can be saved.
In an embodiment of the present invention, the display panel 1 further includes a scan line 6 and a data line 7, the data line 7 and the scan line 6 are connected to the active switch 5, and the scan line 6 and the data line 7 are perpendicularly intersected.
In an embodiment of the present invention, the first pixel transparent region 311 is disposed on one side of the scan line 6, and the second pixel transparent region 321 and the third pixel transparent region 331 are disposed on the other side of the scan line 6.
According to another embodiment of the present invention, the present invention discloses a display panel 1 including:
a first substrate 11; a common electrode 2 formed on the first substrate 11; a second substrate 12 disposed parallel to and opposite to the first substrate 11, and an active switch 5 formed on the second substrate 12; a color resist layer 4 formed on the second substrate 12, wherein the color resist layer 4 includes a plurality of color resist units 40, each color resist unit 41 includes a plurality of color resists with different colors, each color resist includes a first sub color resist 41, a second sub color resist 42 and a third sub color resist 43, and each of the first sub color resist 41, the second sub color resist 42 and the third sub color resist 43 has a step surface with a height difference; the step surface comprises a first step 421, a second step 422 and a third step 423, and the distances between the first step 421, the second step 422 and the third step 423 and the common electrode 2 are gradually reduced; a pixel electrode 3, wherein the pixel electrode 3 includes a first step surface 31 corresponding to the first step 421, a second step surface 32 corresponding to the second step 422, and a third step surface 33 corresponding to the third step 423, and the first step surface 31, the second step surface 32, and the third step surface 33 sequentially form a first pixel light-transmitting region 311, a second pixel light-transmitting region 321, and a third pixel light-transmitting region 331 with the common electrode 2; the ratio of the area of the first pixel light-transmitting region 311 to the area of the second pixel light-transmitting region 321 plus the area of the third pixel light-transmitting region 331 is 1 to 2, and the ratio of the area of the second pixel light-transmitting region 321 to the area of the third pixel light-transmitting region 331 is 1 to 1.
The first, second and third step surfaces 31, 32, 33 and the common electrode 2 sequentially form a first pixel light-transmitting region 311, a second pixel light-transmitting region 321 and a third pixel light-transmitting region 331. Because the first step surface 31, the second step surface 32 and the third step surface 33 have height difference, pixel light-transmitting regions with different depth and area ratio can be formed, a multi-domain effect is formed, and phase difference can be generated in the three pixel light-transmitting regions, so that when the transparent display panel is in a transmission mode, the pixel transmittance is improved, and the condition that a background picture has color cast is improved.
FIG. 7 is a schematic view of a method for manufacturing a display panel according to an embodiment of the present invention; FIG. 8 is a schematic view of a method for manufacturing a display panel according to an embodiment of the present invention; FIG. 9 is a schematic view of a method for manufacturing a display panel according to an embodiment of the present invention; FIG. 10 is a schematic view of a method for manufacturing a display panel according to an embodiment of the present invention; referring to fig. 7 to 10, in combination with fig. 1 to 6, the present embodiment discloses a method for manufacturing a display panel.
Firstly, a color resistance layer 4 with a step layer is formed by utilizing a half-tone mask process, then a passivation layer 8 is laid on the color resistance layer 4, the passivation layer 8 is provided with a step corresponding to the color resistance layer 4, a pixel electrode 3 is laid on the passivation layer 8, and the pixel electrode 3 is provided with a step surface corresponding to the step layer of the color resistance layer 4.
In the process of the halftone mask technology, the halftone mask comprises a light-transmitting part with 100% of light transmittance, a first semi-transmitting part with 60% of light transmittance and a second semi-transmitting part with 30% of light transmittance, and the halftone mask is matched with a developing solution, so that the light-transmitting part corresponding to the color resistance layer is insoluble in the developing solution and keeps the maximum thickness; corresponding to the first half-penetrating part, partial etching (or developing) is carried out to obtain a step with a thinner thickness; more etching (or development) is performed corresponding to the second semi-transmissive portion to obtain a step having the smallest thickness, thereby forming a color resist layer having a multi-step layer.
The three step steps comprise a first step, a second step and a third step, wherein the first step is realized by using a second semi-transparent part with thirty percent of light transmittance correspondingly, the second step is realized by using a first semi-transparent part with sixty percent of light transmittance correspondingly, and the third step is realized by using a light-transparent part with one hundred percent of light transmittance correspondingly; of course, the order may be reversed as long as the design requirements are met.
The first semi-transparent part with the light transmittance of 60% and the second semi-transparent part with the light transmittance of 30% can be set to other light transmittances, for example, the first semi-transparent part is set to be 50% of the light transmittance, and the second semi-transparent part is set to be 20% of the light transmittance, as long as the formed stepped surface meets the requirement.
In the above embodiments, the technical solution of the present invention can be widely applied to various display panels, such as a Twisted Nematic (TN) display panel, an In-Plane Switching (IPS) display panel, a Vertical Alignment (VA) display panel, and a Multi-Domain Vertical Alignment (MVA) display panel, and of course, other types of display panels, such as an Organic Light-Emitting Diode (OLED) display panel, can also be applied to the above solution.
Fig. 11 is a schematic diagram of a display device according to an embodiment of the invention, and referring to fig. 11, in combination with fig. 1 to 10, this embodiment discloses a display device 100. The display device 100 includes a control unit 200 and the display panel 1 according to the present invention, and the display panel is taken as an example to be described in detail above, and it should be noted that the description of the structure of the display panel is also applicable to the display device according to the embodiment of the present invention. When the display device of the embodiment of the invention is a liquid crystal display panel, the liquid crystal display panel includes a backlight module, the backlight module can be used as a light source for supplying sufficient light with uniform brightness and distribution, the backlight module of the embodiment can be a front light type, and is a backlight type, and it should be noted that the backlight module of the embodiment is not limited thereto.
In addition, the various features of the present invention may be combined without conflict with each other.
The foregoing is a more detailed description of the invention in connection with specific alternative embodiments, and the practice of the invention should not be construed as limited to those descriptions. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.
Claims (7)
1. A display panel, comprising:
a first substrate;
a common electrode formed on the first substrate;
the second substrate is arranged in parallel and opposite to the first substrate, and an active switch is arranged on the second substrate;
the color resistance layer is formed on the second substrate and comprises a plurality of color resistance units, each color resistance unit comprises a plurality of color resistances with different colors, each color resistance comprises a first sub color resistance, a second sub color resistance and a third sub color resistance, and the first sub color resistance, the second sub color resistance and the third sub color resistance are respectively provided with step surfaces with height difference;
a pixel electrode formed with a stepped surface corresponding to the stepped surface;
the pixel electrode comprises a first sub-pixel and a second sub-pixel, and the first sub-pixel and the second sub-pixel are respectively connected to the same scanning line and the same data line through two active switches; wherein each first sub-pixel comprises a first pixel electrode; the second sub-pixel comprises a second pixel electrode and a third pixel electrode which are mutually communicated; the first pixel electrode is not conducted with the second pixel electrode;
the step surface of the first sub-color resistor corresponding to one pixel electrode comprises a first step, a second step and a third step; correspondingly, the pixel electrode comprises a first step surface corresponding to the first step, a second step surface corresponding to the second step and a third step surface corresponding to the third step; the first step surface of the pixel electrode forms the first pixel electrode; the second step surface of the pixel electrode forms the second pixel electrode; the third step surface of the pixel electrode forms the third pixel electrode; the first step surface, the second step surface and the third step surface sequentially form a first pixel light-transmitting area, a second pixel light-transmitting area and a third pixel light-transmitting area with the common electrode;
the first pixel light-transmitting area is arranged on one side of the scanning line, and the second pixel light-transmitting area and the third pixel light-transmitting area are arranged on the other side of the scanning line;
the area of the first pixel light-transmitting area is smaller than the areas of the second pixel light-transmitting area and the third pixel light-transmitting area;
the distance between the first step surface and the common electrode is delta nd 1; the distance between the second step surface and the common electrode is delta nd 2; the distance between the third step surface and the common electrode is delta nd 3; wherein, the delta nd1 is more than the delta nd2 is more than the delta nd 3.
2. The display panel according to claim 1,
first step face, second step face and third step face with the interval of common electrode is 4.2um, 3.9um and 3.6um in proper order.
3. The display panel of claim 1, wherein the ratio of the area of the first pixel transparent region to the area of the second pixel transparent region plus the area of the third pixel transparent region is 4 to 6, and the ratio of the area of the second pixel transparent region to the area of the third pixel transparent region is 1 to 1.
4. The display panel of claim 1, wherein the ratio of the area of the first pixel transparent region to the area of the second pixel transparent region plus the area of the third pixel transparent region is 3 to 7, and the ratio of the area of the second pixel transparent region to the area of the third pixel transparent region is 1 to 1.
5. The display panel of claim 4, wherein the first pixel transparent region comprises four sub-pixel electrodes arranged in a 2 x 2 pattern, and the second and third pixel transparent regions comprise three sub-pixel electrodes arranged in a 1 x 3 pattern, respectively;
the common electrode is provided with a dot-shaped gap corresponding to the middle part of each sub-pixel electrode.
6. A display panel, comprising:
a first substrate;
a common electrode formed on the first substrate;
the second substrate is arranged in parallel and opposite to the first substrate, and an active switch is arranged on the second substrate;
the color resistance layer is formed on the second substrate and comprises a plurality of color resistance units, each color resistance unit comprises a plurality of color resistances with different colors, each color resistance comprises a first sub color resistance, a second sub color resistance and a third sub color resistance, and the first sub color resistance, the second sub color resistance and the third sub color resistance are respectively provided with step surfaces with height difference; the step surface comprises a first step, a second step and a third step, and the distances between the first step, the second step and the third step and the common electrode are gradually reduced;
the pixel electrode comprises a first sub-pixel and a second sub-pixel, and the first sub-pixel and the second sub-pixel are respectively connected to the same scanning line and the same data line through two active switches; wherein each first sub-pixel comprises a first pixel electrode; the second sub-pixel comprises a second pixel electrode and a third pixel electrode which are mutually communicated; the first pixel electrode is not conducted with the second pixel electrode; the pixel electrode is provided with a step surface corresponding to the step surface; the step surfaces comprise a first step surface corresponding to the first step, a second step surface corresponding to the second step and a third step surface corresponding to the third step, and the first step surface of the pixel electrode forms the first pixel electrode; the second step surface of the pixel electrode forms the second pixel electrode; the third step surface of the pixel electrode forms the third pixel electrode;
the first step surface, the second step surface and the third step surface sequentially form a first pixel light-transmitting area, a second pixel light-transmitting area and a third pixel light-transmitting area with the common electrode;
the first pixel light-transmitting area is arranged on one side of the scanning line, and the second pixel light-transmitting area and the third pixel light-transmitting area are arranged on the other side of the scanning line;
the ratio of the area of the first pixel light-transmitting area to the area of the second pixel light-transmitting area plus the area of the third pixel light-transmitting area is 3 to 7;
the distance between the first step surface and the common electrode is delta nd 1; the distance between the second step surface and the common electrode is delta nd 2; the distance between the third step surface and the common electrode is delta nd 3; wherein, the delta nd1 is more than the delta nd2 is more than the delta nd 3.
7. A display device, comprising:
a control component;
and a display panel as claimed in any one of claims 1 to 6.
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| CN100476549C (en) * | 2005-10-26 | 2009-04-08 | 中华映管股份有限公司 | Liquid crystal display panel and method for manufacturing color filter substrate |
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