CN109116642B - Circuit substrate, display panel and display device - Google Patents
Circuit substrate, display panel and display device Download PDFInfo
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- CN109116642B CN109116642B CN201811238548.4A CN201811238548A CN109116642B CN 109116642 B CN109116642 B CN 109116642B CN 201811238548 A CN201811238548 A CN 201811238548A CN 109116642 B CN109116642 B CN 109116642B
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
- G02F1/1362—Active matrix addressed cells
- G02F1/136286—Wiring, e.g. gate line, drain line
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1343—Electrodes
- G02F1/134309—Electrodes characterised by their geometrical arrangement
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
- G02F1/1362—Active matrix addressed cells
- G02F1/136209—Light shielding layers, e.g. black matrix, incorporated in the active matrix substrate, e.g. structurally associated with the switching element
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
- G02F1/1362—Active matrix addressed cells
- G02F1/136213—Storage capacitors associated with the pixel electrode
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1343—Electrodes
- G02F1/134309—Electrodes characterised by their geometrical arrangement
- G02F1/134345—Subdivided pixels, e.g. for grey scale or redundancy
- G02F1/134354—Subdivided pixels, e.g. for grey scale or redundancy the sub-pixels being capacitively coupled
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
- G02F1/1362—Active matrix addressed cells
- G02F1/136218—Shield electrodes
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- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Geometry (AREA)
- Power Engineering (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
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Abstract
The invention discloses a circuit substrate, a display panel and a display device, wherein the circuit substrate is used for the display panel and comprises a shielding electrode and a pixel electrode, the pixel electrode comprises at least two branch electrodes with different extending directions, a first branch electrode longitudinally extends along the long side direction of the pixel electrode, the first branch electrode comprises an overlapping region and a non-overlapping region, the overlapping region is opposite to the shielding electrode, the non-overlapping region is adjacent to the shielding electrode, and the width of the non-overlapping region is larger than or equal to a first preset value so as to reduce signal coupling between the shielding electrode and the pixel electrode. The technical scheme of the invention avoids the generation of dark fringes at the edges of the pixels and improves the penetration rate of the display panel.
Description
Technical Field
The invention relates to the technical field of display, in particular to a circuit substrate, a display panel and a display device.
Background
Currently, liquid crystal display panels on the mainstream market can be classified into three types, namely, Twisted Nematic (TN) or super Twisted Nematic (TN) type, In-Plane Switching (IPS) type, and Vertical Alignment (VA) type. The liquid crystal display device generally includes a backlight assembly, a circuit substrate and a color filter substrate disposed opposite to each other, and liquid crystal filled between the circuit substrate and the color filter substrate. In the process of forming a pretilt angle by curing liquid crystal, signal coupling between a pixel electrode and a shielding electrode on a circuit substrate easily causes the tilting of liquid crystal molecules to be influenced by the shielding electrode, and dark fringes are generated at the edge of the pixel, so that the penetration rate of a display panel is reduced.
Disclosure of Invention
The present invention is directed to a circuit substrate, and aims to solve the technical problem that the tilting of the liquid crystal molecules is easily affected by the shielding electrode, so as to avoid the occurrence of dark fringes at the edge of the pixel and improve the transmittance of the display panel.
In order to achieve the above object, the present invention provides a circuit substrate including a shielding electrode and a pixel electrode; the pixel electrode comprises at least two branch electrodes with different extending directions, wherein a first branch electrode longitudinally extends along the long side direction of the pixel electrode, the first branch electrode comprises an overlapping region and a non-overlapping region, the overlapping region is opposite to the shielding electrode, the non-overlapping region is adjacent to the shielding electrode, and the width of the non-overlapping region is larger than or equal to a first preset value so as to reduce signal coupling between the shielding electrode and the pixel electrode.
Optionally, the first preset value is greater than or equal to 3 μm.
Optionally, a width of the overlapping area is greater than or equal to a second preset value, so that a capacitance value of a storage capacitor formed between the pixel electrode and the shielding electrode is greater than or equal to a preset capacitance value.
Optionally, the second preset value is greater than or equal to 1.5 μm.
Optionally, the circuit substrate further comprises a data line extending in a longitudinal direction; the distance between the first branch electrode and the data line is larger than or equal to a third preset value so as to reduce signal coupling between the data line and the pixel electrode.
Optionally, the third preset value is greater than or equal to 4 μm.
Optionally, the pixel electrode further comprises a second branch electrode and a third branch electrode, the second branch electrode extends transversely along the short side direction of the pixel electrode; the third branch electrode extends along the slant which forms an included angle with the short side of the pixel electrode.
Optionally, the third branch electrodes are arranged at intervals of a preset distance.
The invention also provides a display panel, which comprises a circuit substrate, a color filter substrate and liquid crystal, wherein the color filter substrate and the circuit substrate are oppositely arranged; the liquid crystal is arranged between the circuit substrate and the color filter substrate; the circuit substrate comprises a shielding electrode and a pixel electrode; the pixel electrode comprises at least two branch electrodes with different extending directions, wherein a first branch electrode longitudinally extends along the long side direction of the pixel electrode, the first branch electrode comprises an overlapping region and a non-overlapping region, the overlapping region is opposite to the shielding electrode, the non-overlapping region is adjacent to the shielding electrode, and the width of the non-overlapping region is larger than or equal to a first preset value so as to reduce signal coupling between the shielding electrode and the pixel electrode.
The invention further provides a display device, which comprises a display panel, wherein the display panel comprises a circuit substrate, a color filter substrate and liquid crystal, and the color filter substrate and the circuit substrate are oppositely arranged; the liquid crystal is arranged between the circuit substrate and the color filter substrate; the circuit substrate comprises a shielding electrode and a pixel electrode; the pixel electrode comprises at least two branch electrodes with different extending directions, wherein a first branch electrode longitudinally extends along the long side direction of the pixel electrode, the first branch electrode comprises an overlapping region and a non-overlapping region, the overlapping region is opposite to the shielding electrode, the non-overlapping region is adjacent to the shielding electrode, and the width of the non-overlapping region is larger than or equal to a first preset value so as to reduce signal coupling between the shielding electrode and the pixel electrode.
In the technical scheme of the invention, the circuit substrate comprises a shielding electrode and a pixel electrode; the pixel electrode comprises at least two branch electrodes with different extending directions, and liquid crystal tilts under the action of the pixel electrode in a region close to the pixel electrode. The first branch electrode longitudinally extends along the long side direction of the pixel electrode, the first branch electrode comprises an overlapping area and a non-overlapping area, the overlapping area is opposite to the shielding electrode, and a storage capacitor is formed between the overlapping area and the shielding electrode; the non-overlapping area is adjacent to the shielding electrode, the larger the width of the non-overlapping area is, the smaller the tilting influence of the shielding electrode on the liquid crystal is, and in the scheme, the width of the non-overlapping area is larger than or equal to a first preset value so as to reduce the signal coupling between the shielding electrode and the pixel electrode. According to the technical scheme, the coupling between the shielding electrode and the pixel electrode is reduced by adjusting the distance between the pixel electrode and the shielding electrode, so that the liquid crystal can be arranged in the preset direction, dark stripes are reduced, and the display effect is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a circuit substrate according to an embodiment of the invention;
fig. 2 is a partially enlarged view of a portion a in fig. 1.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 100 | |
200 | |
| 210 | |
211 | |
| 212 | Non-overlapping |
220 | The |
| 230 | |
300 | Data line |
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is 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 at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The invention provides a circuit substrate.
In an embodiment of the present invention, as shown in fig. 1 and fig. 2, the circuit substrate includes a shielding electrode 100 and a pixel electrode 200, the pixel electrode 200 includes at least two branch electrodes having different extending directions, wherein a first branch electrode 210 extends longitudinally along a long side direction of the pixel electrode, the first branch electrode 210 includes an overlapping region 211 and a non-overlapping region 212, the overlapping region 211 is opposite to the shielding electrode 100, the non-overlapping region 212 is adjacent to the shielding electrode 100, and a width K1 of the non-overlapping region 212 is greater than or equal to a first preset value, so as to reduce signal coupling between the shielding electrode 100 and the pixel electrode 200.
Specifically, in the display device, in order to enable the liquid crystal in the display device to be rapidly deflected in the corresponding direction during displaying, and to achieve fast and correct display of the picture, a pretilt angle needs to be set for the liquid crystal between the circuit substrate and the color filter substrate during preparing the display panel. That is, in the display panel, the liquid crystal near the circuit substrate and the color filter substrate is not perfectly vertical to the plane of the display panel, but is slightly inclined. The pretilt angle is realized by applying a certain bias voltage on the pixel electrode and enabling the liquid crystal to deflect under the influence of the extending direction of the branch electrode of the pixel electrode when the display panel is prepared, and then the display panel is irradiated by ultraviolet light for curing to form a stable pretilt angle of the liquid crystal. In the circuit substrate, the shield electrode 100 is electrically connected to a common line of the circuit substrate, the shield electrode 100 extends in a longitudinal direction of a long side direction of the pixel electrode, and the pixel electrode 200 includes at least two kinds of branch electrodes having different extending directions, and in fig. 1 and 2, there is an overlap between a first branch electrode 210 extending in the longitudinal direction of the pixel electrode and the longitudinally extending shield electrode 100. Since the pixel electrode 200 and the shielding electrode 100 overlap each other and extend in the longitudinal direction, and the distance of the overlapping portion is long, coupling exists between the pixel electrode 200 and the shielding electrode 100, so that the actual bias voltage obtained by the liquid crystal in the overlapping region 211 and the vicinity thereof is different from the actual bias voltage obtained by the liquid crystal in the non-overlapping region 211, and therefore, the deflection of the part of the liquid crystal corresponding to the overlapping region 211 is different from the deflection direction of the part of the liquid crystal corresponding to the non-overlapping region 212, and disorder of the liquid crystal direction occurs. In order to reduce the disorder of the liquid crystal direction, the width K1 of the non-overlapping area 212 should be greater than or equal to the first predetermined value, and as the width K1 of the non-overlapping area increases, the influence of the coupling of the shielding electrode 100 on the liquid crystal corresponding to the pixel electrode 200 is smaller, so that the deflection of the liquid crystal corresponding to the overlapping area 211 and the non-overlapping area 212 is as consistent as possible, the disorder of the liquid crystal direction is avoided, and the dark streak at the edge of the pixel electrode 200, i.e. at the overlapping or adjacent position of the pixel electrode 200 and the shielding electrode 100 is avoided.
In the present embodiment, the circuit substrate includes a shielding electrode 100 and a pixel electrode 200; the pixel electrode 200 includes at least two kinds of branch electrodes having different extending directions, and the liquid crystal is tilted by the pixel electrode 200 in a region near the pixel electrode. The first branch electrode 210 longitudinally extends along the long side direction of the pixel electrode 200, the first branch electrode 210 includes an overlapping region 211 and a non-overlapping region 212, the overlapping region 211 is opposite to the shielding electrode 100, and a storage capacitor is formed between the overlapping region 211 and the shielding electrode 100; the non-overlapping area 212 is adjacent to the shielding electrode 100, the larger the width of the non-overlapping area 212 is, the smaller the tilting influence of the shielding electrode 100 on the liquid crystal is, and in the scheme, the width of the non-overlapping area 212 is greater than or equal to a first preset value so as to reduce the signal coupling between the shielding electrode 100 and the pixel electrode 200. According to the technical scheme of the invention, the coupling between the shielding electrode 100 and the pixel electrode 200 is reduced by adjusting the distance between the pixel electrode 100 and the shielding electrode 200, so that liquid crystals can be arranged according to the preset direction, dark stripes are reduced, and the display effect is improved.
In the present embodiment, as shown in fig. 1 and 2, the pixel electrode 200 further includes a second branch electrode 220 and a third branch electrode 230, the second branch electrode 220 extends transversely along the short side direction of the pixel electrode 200; the third branch electrode 230 extends along an oblique direction forming an angle with the short side of the pixel electrode 200. The first branch electrode 210 and the second branch electrode 220 are communicated with the third branch electrodes 230, so that the level on the whole pixel electrode 200 is consistent, and the deflection angle of liquid crystal in a single pixel is ensured to be consistent. In fig. 1, there are third branch electrodes 230 distributed in different directions in four regions. Further, the third branch electrodes 230 are disposed at intervals of a predetermined distance. The third branch electrode 230 helps to guide the liquid crystal to deflect in the direction of the third branch electrode 230 when the liquid crystal forms a pretilt angle, so that four domains of liquid crystal are formed in one pixel to improve the display effect of the picture.
Further, a plurality of points are selected on the circuit substrate along the transverse direction, the width of the non-overlapping area K1 is changed at each point, and the obtained dark stripe results are shown in the following table:
| K1/μm | 2.32 | 2.75 | 2.82 | 3.01 | 3.04 | 3.14 | 3.21 | 3.93 | 4.34 | 4.92 |
| dark line | Is provided with | Is provided with | Is provided with | Is free of | Is free of | Is free of | Is free of | Is free of | Is free of | Is free of |
According to the experimental result, when the width K1 of the non-overlapping area 212 is greater than or equal to 3 μm, the dark stripes will disappear. Therefore, the first preset value generally takes a value of 3 μm or more. As the value of the first preset value increases, the possibility of occurrence of dark stripes decreases.
In the present embodiment, the width K2 of the overlapping area is greater than or equal to the second preset value, so that the capacitance of the storage capacitor formed between the pixel electrode 200 and the shielding electrode 100 is greater than or equal to the preset capacitance.
In the display panel, in order to keep the charge level for controlling the liquid crystal deflection in the pixel until the next screen update, the overlapping region 211 of the pixel electrode 200 and the shielding electrode 100 form a storage capacitor. The larger the width K2 of the overlap region is, the larger the plate area in the parallel plate capacitor is, and the larger the capacitance value of the storage capacitor is. In order to ensure a sufficiently large capacitance value of the storage capacitor, the width K2 of the overlap region is greater than or equal to a second predetermined value,
Further, the second preset value is greater than or equal to 1.5 μm.
According to the experimental result, when the width K2 of the overlapping region 211 is greater than or equal to 1.5 μm, the capacitance of the storage capacitor can be ensured, and normal display of the picture can be realized.
In an embodiment of the present invention, as shown in fig. 1 and fig. 2, the circuit substrate further includes a data line 300, the data line 300 extending along a longitudinal direction; the distance K3 between the first branch electrode 210 and the data line 300 is greater than or equal to the third preset value to reduce the signal coupling between the data line 300 and the pixel electrode 200.
Specifically, the data line 300 and the first branch electrode 210 both extend in the longitudinal direction, and there may be signal coupling. In order to reduce signal coupling and avoid the influence of the data signal on the data line 300 on the liquid crystal deflection at the edge of the pixel electrode 200, the distance K3 between the first branch electrode 210 and the data line 300 is greater than or equal to the third preset value.
Further, the third preset value is greater than or equal to 4 μm.
According to the experimental result, when the distance K3 between the first branch electrode 210 and the data line 300 is greater than or equal to 4 μm, the coupling between the pixel electrode 200 and the data line 300 can be effectively suppressed, and accordingly, the value range of the third preset value is greater than or equal to 4 μm.
The invention further provides a display panel, which comprises a circuit substrate, a color filter substrate and liquid crystal, wherein the color filter substrate and the circuit substrate are arranged oppositely, the liquid crystal is arranged between the circuit substrate and the color filter substrate, the specific structure of the circuit substrate refers to the embodiment, and the display panel adopts all the technical schemes of all the embodiments, so that the display panel at least has all the beneficial effects brought by the technical schemes of the embodiments, and the detailed description is omitted. Specifically, the circuit substrate is mainly used for controlling the deflection degree of liquid crystal in each pixel to change the light transmittance of the pixel, and the color filter substrate usually has at least three color filter regions of red, green and blue, and realizes the display of a color picture by combining the difference of the light transmittance of each pixel.
The invention further provides a display device, which comprises a display panel, wherein the display panel comprises a circuit substrate, a color filter substrate and liquid crystal, the color filter substrate and the circuit substrate are arranged oppositely, the liquid crystal is arranged between the circuit substrate and the color filter substrate, the specific structure of the circuit substrate refers to the embodiment, and as the display panel adopts all the technical schemes of all the embodiments, the display device at least has all the beneficial effects brought by the technical schemes of the embodiments, and the detailed description is omitted.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (9)
1. A circuit substrate for a display panel, the circuit substrate comprising:
a shield electrode electrically connected to a common line of the circuit substrate;
the pixel electrode comprises at least two branch electrodes with different extending directions, wherein a first branch electrode longitudinally extends along the long side direction of the pixel electrode, the first branch electrode comprises an overlapping region and a non-overlapping region, the overlapping region is opposite to the shielding electrode, the non-overlapping region is adjacent to the shielding electrode, the width of the non-overlapping region is larger than or equal to a first preset value, and therefore signal coupling between the shielding electrode and the pixel electrode is reduced;
wherein the first preset value is greater than or equal to 3 μm.
2. The circuit substrate of claim 1, wherein a width of the overlapping area is greater than or equal to a second preset value, so that a capacitance value of a storage capacitor formed between the pixel electrode and the shielding electrode is greater than or equal to a preset capacitance value.
3. The circuit substrate of claim 2, wherein the second predetermined value is greater than or equal to 1.5 μ ι η.
4. The circuit substrate of claim 1, wherein the circuit substrate further comprises:
a data line extending in a longitudinal direction;
the distance between the first branch electrode and the data line is larger than or equal to a third preset value so as to reduce signal coupling between the data line and the pixel electrode.
5. The circuit substrate of claim 4, wherein the third preset value is greater than or equal to 4 μm.
6. The circuit substrate of claim 1, wherein the pixel electrode further comprises:
a second branch electrode extending laterally in a short side direction of the pixel electrode;
and the third branch electrode extends along an oblique direction which forms an included angle with the short side of the pixel electrode.
7. The circuit substrate according to claim 6, wherein the third branch electrodes are spaced apart by a predetermined distance.
8. A display panel, comprising:
the circuit substrate according to any one of claims 1 to 7;
a color filter substrate disposed opposite to the circuit substrate;
and a liquid crystal disposed between the circuit substrate and the color filter substrate.
9. A display device characterized in that the display device comprises the display panel according to claim 8.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811238548.4A CN109116642B (en) | 2018-10-23 | 2018-10-23 | Circuit substrate, display panel and display device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811238548.4A CN109116642B (en) | 2018-10-23 | 2018-10-23 | Circuit substrate, display panel and display device |
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| CN109116642A CN109116642A (en) | 2019-01-01 |
| CN109116642B true CN109116642B (en) | 2021-11-05 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104375340A (en) * | 2014-11-14 | 2015-02-25 | 友达光电股份有限公司 | Pixel structure |
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| CN105911776A (en) * | 2015-02-23 | 2016-08-31 | 三星显示有限公司 | Liquid Crystal Display Device |
| CN106019750A (en) * | 2016-08-10 | 2016-10-12 | 京东方科技集团股份有限公司 | Liquid crystal display panel and display device |
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| CN104375340A (en) * | 2014-11-14 | 2015-02-25 | 友达光电股份有限公司 | Pixel structure |
| CN105911776A (en) * | 2015-02-23 | 2016-08-31 | 三星显示有限公司 | Liquid Crystal Display Device |
| CN104882450A (en) * | 2015-04-30 | 2015-09-02 | 京东方科技集团股份有限公司 | Array substrate, manufacturing method thereof, and display device |
| CN106019750A (en) * | 2016-08-10 | 2016-10-12 | 京东方科技集团股份有限公司 | Liquid crystal display panel and display device |
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