CN107121820A - A kind of liquid crystal display panel and display device - Google Patents
A kind of liquid crystal display panel and display device Download PDFInfo
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- CN107121820A CN107121820A CN201710532089.XA CN201710532089A CN107121820A CN 107121820 A CN107121820 A CN 107121820A CN 201710532089 A CN201710532089 A CN 201710532089A CN 107121820 A CN107121820 A CN 107121820A
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- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 89
- 239000000758 substrate Substances 0.000 claims abstract description 73
- 238000009413 insulation Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 12
- 230000009467 reduction Effects 0.000 abstract description 3
- 230000004888 barrier function Effects 0.000 abstract 3
- 239000012528 membrane Substances 0.000 abstract 2
- 230000005540 biological transmission Effects 0.000 abstract 1
- 230000006854 communication Effects 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 116
- 238000002834 transmittance Methods 0.000 description 27
- 239000010408 film Substances 0.000 description 22
- 239000010409 thin film Substances 0.000 description 17
- 238000010586 diagram Methods 0.000 description 10
- 238000000034 method Methods 0.000 description 9
- 230000008569 process Effects 0.000 description 9
- 238000005530 etching Methods 0.000 description 7
- 239000011229 interlayer Substances 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 230000001902 propagating effect Effects 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 4
- 238000001514 detection method Methods 0.000 description 4
- 239000011159 matrix material Substances 0.000 description 4
- 238000003786 synthesis reaction Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
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- 230000001678 irradiating effect Effects 0.000 description 1
- 239000002052 molecular layer Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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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
-
- 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
- G02F1/13338—Input devices, e.g. touch panels
-
- 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
- G02F1/1339—Gaskets; Spacers; Sealing of cells
- G02F1/13394—Gaskets; Spacers; Sealing of cells spacers regularly patterned on the cell subtrate, e.g. walls, pillars
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Liquid Crystal (AREA)
Abstract
The present invention describes a kind of liquid crystal display panel and display device, it is related to display technology field, the liquid crystal display panel includes viewing area, non-display area around viewing area, the color membrane substrates and array base palte being oppositely arranged, main support column between color membrane substrates and array base palte, the first sub-pixel unit positioned at viewing area, where array base palte on the direction of plane, main support column and the first sub-pixel unit are mutually overlapped, first insulating barrier, the first insulating barrier has groove in the open area of the first sub-pixel unit.The present invention carries out grooving to the first insulating barrier in the first sub-pixel unit and obtains groove, it can eliminate or reduce the part that light is reflected in communication process, increase light transmission rate, increase the brightness of the first sub-pixel unit, the luminance difference at main support column with being not provided with main support column is provided with reduction viewing area, the regular dim spot of reduction can identification, improve regular dim spot phenomenon, lift display effect.
Description
Technical Field
The invention relates to the technical field of display, in particular to a liquid crystal display panel and a display device.
Background
In the prior art, generally, a plurality of main support columns are arranged between a color film substrate and an array substrate which are arranged oppositely to maintain the box thickness of a liquid crystal display panel after being attached, and in order to prevent the phenomenon of extrusion light leakage in a dark state (that is, in the use process of the liquid crystal display panel, when the color film substrate is extruded and deformed, the main support columns arranged on the color film substrate are driven to move together, the movement of the main support columns may scratch an alignment film on the array substrate, so that the alignment film is damaged, and after the alignment film is damaged, the arrangement of liquid crystal molecules in a liquid crystal layer may change, so that the phenomenon of light leakage in the dark state occurs), the coverage area of a black matrix at the main support columns needs to be increased, and when the coverage area of the black matrix at the main support columns is greatly different from that of other black matrices at positions where the main support columns are not arranged, the brightness at the main support columns and the brightness at the positions where the main support columns are not arranged may be obviously different, and then, obvious regular dark spots with the same distribution rule as the main supporting columns are formed on the display panel, and the formation of the regular dark spots influences the display effect of the display panel.
Disclosure of Invention
In view of the above, the present invention provides a liquid crystal display panel and a display device.
The present invention provides a liquid crystal display panel, comprising:
a display area, a non-display area surrounding the display area;
the color film substrate is arranged opposite to the array substrate;
the main supporting columns are positioned between the color film substrate and the array substrate;
the first sub-pixel unit is positioned in the display area, and the main supporting column and the first sub-pixel unit are overlapped with each other in a direction perpendicular to the plane of the array substrate;
a first insulating layer having a groove in an opening region of the first sub-pixel unit.
Optionally, the groove is a hollowed structure.
Optionally, wherein the groove has the same shape as the opening region of the first sub-pixel unit.
Optionally, wherein the area of the opening region of the groove is the same as the area of the opening region of the first sub-pixel unit.
Optionally, the first sub-pixel unit includes a red sub-pixel unit and a blue sub-pixel unit, and for the same main support column, in a direction perpendicular to a plane of the array substrate, the red sub-pixel unit and the blue sub-pixel unit are overlapped with each other respectively.
Optionally, one side of the array substrate facing the color filter substrate includes:
the display device comprises a plurality of gate lines and a plurality of data lines, wherein the gate lines are arranged along a first direction and extend along a second direction, the data lines are arranged along the second direction and extend along the first direction, the first direction is crossed with the second direction, the gate lines and the data lines are crossed in an insulating mode to define a plurality of sub-pixel units, and the sub-pixel units comprise first sub-pixel units.
Optionally, wherein the first insulating layer is between the gate line and the data line.
Optionally, wherein the array substrate further includes:
the touch signal lines and the data lines are arranged in the display area in a different-layer insulation mode, and the touch signal lines are positioned on one side, facing the color film substrate, of the data lines;
the first electrode layer is positioned on one side, facing the color film substrate, of the touch signal line, and the first insulating layer is positioned between the first electrode layer and the touch signal line.
Optionally, the first electrode layer is a pixel electrode layer or a common electrode layer.
Optionally, the sub-pixel units include a red sub-pixel unit, a green sub-pixel unit and a blue sub-pixel unit, and the touch signal line is located between the red sub-pixel unit and the blue sub-pixel unit in a direction perpendicular to a plane of the array substrate;
the main supporting columns are respectively overlapped with the red sub-pixel units and the green sub-pixel units; or,
the main supporting columns are respectively overlapped with the blue sub-pixel units and the green sub-pixel units.
Optionally, wherein the liquid crystal display panel is a negative liquid crystal display panel.
Optionally, the array substrate further includes a self-contained touch electrode layer.
Optionally, the self-contained touch electrode layer includes a plurality of touch electrode blocks arranged in an array, and each of the touch electrode blocks is electrically connected to at least one of the touch signal lines.
Optionally, the touch electrode block is electrically connected to the touch signal line through a via hole.
Optionally, the self-capacitance touch electrode layer is reused as a common electrode layer.
The invention also provides a display device which comprises the liquid crystal display panel.
Compared with the prior art, the invention has at least the following outstanding advantages:
in the technical solution provided by the embodiment of the present invention, the first insulating layer is grooved in the first sub-pixel unit adjacent to the main support pillar and having a smaller aperture ratio, for example, by etching to obtain the groove, and after the groove is obtained, the portion of light reflected in the process of propagating in the first insulating layer can be eliminated or reduced, the transmittance of light in the opening area of the first sub-pixel unit is increased, and for a certain sub-pixel unit, the brightness that can be achieved in the area corresponding to the light-emitting surface of the liquid crystal display panel, that is, the transmittance of light is proportional to the product of the aperture ratio of the sub-pixel unit and the transmittance of light, and further the existence of the groove can increase the brightness of the first sub-pixel unit, increase the brightness at the main support pillar, reduce the brightness difference between the position where the main support pillar is arranged in the display area and the position where the main support pillar is not arranged, and reduce the identifiability of regular dark spots, the phenomenon of regular dark spots is improved, and the display effect is improved.
Drawings
Fig. 1A is a schematic structural diagram of a liquid crystal display panel according to an embodiment of the invention;
fig. 1B is a schematic top view of a liquid crystal display panel according to an embodiment of the invention;
fig. 1C is a schematic partial top view of a first insulating layer according to an embodiment of the invention;
FIG. 1D is a cross-sectional view taken along line B-B' of FIG. 1C;
FIG. 1E is a further cross-sectional view taken along B-B' of FIG. 1C;
fig. 2 is a schematic top view of a liquid crystal display panel according to an embodiment of the invention;
FIG. 3 is a cross-sectional view taken along A-A' of FIG. 1B;
FIG. 4A is a further cross-sectional view taken along A-A' of FIG. 1B;
FIG. 4B is a further cross-sectional view taken along A-A' of FIG. 1B;
fig. 5A is a schematic top view of a liquid crystal display panel according to an embodiment of the invention;
fig. 5B is a schematic top view of a liquid crystal display panel according to an embodiment of the invention;
fig. 6 is a schematic top view of a self-capacitance touch electrode layer according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a display device according to an embodiment of the present invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, the present invention is further described with reference to the accompanying drawings and examples.
It should be noted that in the following description, specific details are set forth in order to provide a thorough understanding of the present invention. The invention can be implemented in a number of ways different from those described herein and similar generalizations can be made by those skilled in the art without departing from the spirit of the invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.
As shown in fig. 1A and fig. 1B, fig. 1A is a schematic structural diagram of a liquid crystal display panel according to an embodiment of the present invention, and fig. 1B is a schematic structural diagram of a top view of a liquid crystal display panel according to an embodiment of the present invention, in which the liquid crystal display panel 100 includes:
a display area, a non-display area surrounding the display area;
the color film substrate 1 and the array substrate 2 are arranged oppositely, and the color film substrate 1 and the array substrate 2 are arranged oppositely;
the main supporting columns 3 are positioned between the color film substrate 1 and the array substrate 2;
the first sub-pixel unit 101, the first sub-pixel unit 101 is located in the display area, and in the direction perpendicular to the plane of the array substrate 2, the main support column 3 and the first sub-pixel unit 101 are overlapped with each other;
a first insulating layer 11, the first insulating layer 11 having a recess 111 in an opening area 1011 of the first sub-pixel unit 101.
Specifically, as shown in fig. 1A, the liquid crystal display panel 100 may include a color film substrate 1, a main support pillar 3, a liquid crystal molecular layer 4, and an array substrate 2, which are sequentially stacked from top to bottom, wherein the main support pillar 3 for maintaining the box thickness of the liquid crystal display panel 100 may be disposed on a side of the color film substrate 1 facing the array substrate 2, and is in contact with the array substrate 2. And the liquid crystal display panel 100 may include a display region (not shown) for image and information display and a non-display region (not shown) for laying out peripheral circuits such as display driving, electrostatic protection, and the like in a two-dimensional plane. As shown in fig. 1B, one side of the array substrate 2 facing the color filter substrate 1 may further include a plurality of gate lines 12 arranged along the first direction X and extending along the second direction Y, and a plurality of data lines 13 arranged along the second direction Y and extending along the first direction X, where the first direction X intersects the second direction Y, and the gate lines 12 and the data lines 13 in the display region may intersect in an insulating manner to define a plurality of sub-pixel units 10 including the first sub-pixel unit 101. The sub-pixel unit 10 may be provided with a switching thin film transistor 14 and a pixel electrode (not shown), wherein the source 141 of the switching thin film transistor 14 is electrically connected to the data line 13, the gate 142 is electrically connected to the gate line 12, and the drain 143 is electrically connected to the pixel electrode, and after the switching thin film transistor 14 is turned on by a voltage signal on the gate line 12, the data line 13 may transmit a data signal to the pixel electrode through the source 141 and the drain 143 of the switching thin film transistor 14. As shown in fig. 1A and 1B, the first sub-pixel unit 101 is directly adjacent to the main support pillar 3, and in a direction perpendicular to the plane of the array substrate 2, the main support pillar 3 and the first sub-pixel unit 101 overlap each other, the first insulating layer 11 has a groove 111 in an opening area 1011 of the first sub-pixel unit 101, wherein the first insulating layer 11 may be disposed on a side of the array substrate 2 facing the color filter substrate 1, and may specifically be in the form of one or more insulating layers, and the groove 111 may be obtained by, for example, etching the first insulating layer 11 in the first sub-pixel unit 101 adjacent to the main support pillar 3, wherein the groove 111 may be obtained by removing only a certain thickness from the first insulating layer 11 in the direction perpendicular to the plane of the array substrate 2, or may be obtained by completely hollowing out the first insulating layer 11, it is only necessary to ensure that the thickness of the first insulating layer 11 at the position of the groove 111 is smaller than that at other positions. According to the technical scheme provided by the embodiment of the invention, the groove 111 is obtained by grooving the first insulating layer 11 in the first sub-pixel unit 101 adjacent to the main support column 3 in an etching manner, for example, wherein the groove 111 can be hollowed or the bottom surface of the groove still has a certain thickness, and after the groove 111 is obtained, the reflected part of light in the process of propagating in the first insulating layer 11 can be eliminated or reduced, the transmittance of light in the opening area 1011 of the first sub-pixel unit 101 is increased, the brightness of the main support column 3 is increased, the brightness difference between the position where the main support column 3 is arranged in the display area and the position where the main support column 3 is not arranged is reduced, the discernability of a regular dark spot is reduced, the regular dark spot phenomenon is improved, and the display effect is improved.
In the technical solution provided in the embodiment of the present invention, due to the existence of the main support pillar 3 and the reason that the area of the black matrix (not shown in the figure) in the region corresponding to the main support pillar 3 on the color film substrate is expanded due to squeezing light leakage, the region where the first sub-pixel unit 101 is located has a relatively smaller aperture ratio than other regions where the main support pillar is not located, that is, a smaller opening region is located in the sub-pixel unit 10 with the same area, wherein for each sub-pixel unit 10, the range where light for normal display exits in the region corresponding to the light-emitting surface of the liquid crystal display panel is the opening region. As shown in fig. 1A and 1B, on one hand, since the first insulating layer 11 has different refractive indexes from other adjacent layers, a large portion of light in the light source is reflected at the incident interface of the first insulating layer 11 and cannot reach the light-emitting surface, and on the other hand, since the first insulating layer 11 is affected by gravity and different forces between molecules during the formation process, the same refractive index is not always maintained in the direction perpendicular to the plane of the array substrate 2, so a considerable portion of light still cannot reach the light-emitting surface due to reflection during the propagation process of the light in the first insulating layer 11, according to the technical solution provided by the embodiment of the present invention, the first insulating layer 11 is grooved in the first sub-pixel unit 101 adjacent to the main support pillar 3 and having a small aperture ratio, for example, to obtain the groove 111, wherein, as shown in fig. 1C and fig. 1D, fig. 1D is a cross-sectional view taken along B-B' of fig. 1C, the bottom surface 1110 of the groove 111 still has a certain thickness, that is, only a certain thickness is removed from the first insulating layer 11, after the groove 111 is obtained, due to the thickness reduction of the dielectric layer at the position of the groove 111, the layers with different refractive indexes passed by the light during the propagation process in the first insulating layer 11 can be reduced, the portion of the light in the first insulating layer 11 that is reflected by passing through the layers with different refractive indexes is reduced, the transmittance of the light in the opening area 1011 of the first sub-pixel unit 101 is increased, and for a certain sub-pixel unit 10, the brightness that can be achieved in the area corresponding to the light-emitting surface of the liquid crystal display panel 100, that is, the transmittance of the light is proportional to the product of the aperture ratio of the sub-pixel unit and the transmittance of the light, and the existence of the groove 111 can increase the brightness of the first sub-pixel unit 101, the brightness of the main supporting column 3 is increased, the brightness difference between the position where the main supporting column 3 is arranged in the display area and the position where the main supporting column 3 is not arranged is reduced, the identifiability of the regular dark spot is reduced, the regular dark spot phenomenon is improved, and the display effect is improved.
In the technical solution provided in the embodiment of the present invention, the groove 111 is obtained by performing a groove digging on the first insulating layer 11 in the first sub-pixel unit 101 adjacent to the main support pillar 3 and having a smaller aperture ratio, for example, as shown in fig. 1C and fig. 1E, fig. 1C is a schematic diagram of a partial top view structure of the first insulating layer provided in the embodiment of the present invention, fig. 1E is a further cross-sectional view of fig. 1C along B-B', a bottom surface of the groove 111 is a hollow structure, that is, the dielectric layer at the position of the groove 111 is completely removed, after the groove 111 is obtained, since the incident interface of the first insulating layer 11 in the hollow area of the groove 111 disappears, the incident light can be completely transmitted, further the reflected portion of the light at the incident interface can be removed, the transmittance of the light in the opening area 1011 of the first sub-pixel unit 101 is increased, and for a certain sub-pixel unit 10, the brightness of the liquid crystal display panel 100 in the area corresponding to the light-emitting surface, that is, the light transmittance, is proportional to the product of the aperture ratio of the sub-pixel unit and the light transmittance, and the hollow groove 111 can increase the brightness of the first sub-pixel unit 101, increase the brightness of the main support column 3, reduce the brightness difference between the main support column 3 and the part without the main support column 3 in the display area, reduce the visibility of the regular dark spot, improve the regular dark spot phenomenon, and improve the display effect.
It should be added that, as shown in fig. 1B, a metal light-shielding layer 145 may be further disposed on a side of the array substrate 2 facing the color filter substrate 1, and the metal light-shielding layer 145 can effectively shield the active layer 144 in the "top-gate type" switching thin film transistor 14, for example, so as to prevent light in a backlight source from irradiating the active layer 144, and effectively prevent generation of a photo-generated carrier and a leakage current. In some alternative embodiments, the switching thin film transistor may also be a "bottom gate type", that is, the switching thin film transistor may include a source drain metal layer (including a source and a drain that are disposed in the same layer, where the source may be disposed in the same layer as the data line), an active layer, and a gate (where the gate may be disposed in the same layer as the gate line), which are sequentially stacked from top to bottom.
Optionally, as shown in fig. 1A, 1B, 1C, and 1E, the groove 111 is a hollow structure.
Specifically, since the first insulating layer 11 and the adjacent layers have different refractive indexes, light in the light source will have a large portion reflected at the incident interface of the first insulating layer 11 and will not reach the light-emitting surface, in the technical solution provided by the embodiment of the present invention, the first insulating layer 11 is grooved in the first sub-pixel unit 101 adjacent to the main support pillar 3 and having a small aperture ratio, for example, by etching to obtain the groove 111 with a hollowed bottom, and after obtaining the groove 111, the incident light can be completely transmitted in the hollowed area of the groove 111, the portion of the light reflected at the incident interface is eliminated, the transmittance of light in the opening area 1011 of the first sub-pixel unit 101 is increased, and for a certain sub-pixel unit 10, the brightness that can be achieved in the area corresponding to the light-emitting surface of the liquid crystal display panel 100, that is, the transmittance of light is proportional to the product of the aperture ratio of the sub-pixel unit and the transmittance of light, and then the existence of the recess 111 of fretwork can increase the luminance of first sub-pixel unit 101, increases the luminance of main tributary dagger 3 department, reduces the luminance difference that is provided with main tributary dagger 3 department in the display area and does not set up main tributary dagger 3 department, reduces the discernment degree of rule dim spot, improves rule dim spot phenomenon, promotes the display effect. In some alternative embodiments, the bottom surface of the groove 111 may also be partially hollowed, wherein the larger the hollowed area is, the larger the luminance enhancement for the first sub-pixel unit 101 is, and the better the improvement on the regular dark spot phenomenon is.
Alternatively, as shown in fig. 1B and 1C, the groove 111 has the same shape as the opening area 1011 of the first sub-pixel unit 101. Specifically, the shape of the groove 111 obtained by grooving the first insulating layer 11 in the opening area 1011 of the first sub-pixel unit 101 adjacent to the main support pillar 3 and having a smaller opening ratio by, for example, etching may be the same as that of the opening area 1011 where the first insulating layer is located. It is understood that the shape of the opening area 1011 and the groove 111 in fig. 1B and 1C is square, but in some other alternative embodiments, the shape of the opening area 1011 and the groove 111 may also be trapezoid, rectangle or circle, which is not limited by the present invention.
Alternatively, as shown in fig. 1A and 1B, the area of the opening area 1011 of the groove 111 is the same as that of the opening area 1011 of the first sub-pixel unit 101. Specifically, as shown in fig. 1A and fig. 1B, according to the technical solution provided by the embodiment of the present invention, the groove 111 is disposed in the whole opening area 1011 of the first sub-pixel unit 101 adjacent to the main support pillar 3 and having a smaller opening ratio, so as to eliminate or reduce the reflected portion of the light in the process of propagating in the first insulating layer 11 to the greatest extent, increase the transmittance of the light in the opening area 1011 of the first sub-pixel unit 101, further increase the brightness of the first sub-pixel unit 101 to the greatest extent, increase the brightness at the position of the main support pillar 3, reduce the brightness difference between the position where the main support pillar 3 is disposed in the display area and the position where the main support pillar 3 is not disposed, reduce the discernability of the regular dark spot, improve the regular dark spot phenomenon, and improve the display effect.
Alternatively, as shown in fig. 1A, fig. 1B and fig. 2, fig. 2 is a schematic diagram of another top view structure of a liquid crystal display panel according to an embodiment of the present invention, in which the first sub-pixel unit 101 includes a red sub-pixel unit 101R and a blue sub-pixel unit 101B, and for the same main support column 3, in a direction perpendicular to the plane of the array substrate 2, the red sub-pixel unit 101R and the blue sub-pixel unit 101B are overlapped with each other.
Specifically, as shown in fig. 1A, 1B and 2, the first sub-pixel units 101 adjacent to the main support column 3 and overlapping each other are respectively a red sub-pixel unit 101R (substantially displaying red light after light is transmitted) and a blue sub-pixel unit 101B (substantially displaying blue light after light is transmitted) in a direction perpendicular to the plane of the array substrate 2, wherein the red sub-pixel unit 101R and the blue sub-pixel unit 101B may be repeatedly arranged in the extending direction of the gate line 12 in a certain minimum repeatable unit including the red sub-pixel unit 101R and the blue sub-pixel unit 101B together in the display region, and remain unchanged in the extending direction of the data line 13. As shown in fig. 2, with respect to a green sub-pixel unit with a high transmittance (substantially displaying green light after light is transmitted), since the transmittance of the regions corresponding to the red sub-pixel unit 101R and the blue sub-pixel unit 101B is low, and the luminance in a certain sub-pixel unit is proportional to the transmittance of light therein, the luminance of the regions corresponding to the red sub-pixel unit 101R and the blue sub-pixel unit 101B is low, and the luminance of a certain sub-pixel unit is smaller, the influence on the luminance of the display region where the sub-pixel unit is located is relatively smaller after the luminance of the sub-pixel unit is changed, and the main support pillar 3 is disposed between the red sub-pixel unit 101R and the blue sub-pixel unit 101B, so that the external expansion of the black matrix area in the region corresponding to the main support pillar 3 and the main support pillar 3 on the color film substrate can be relatively reduced compared with the case of being disposed near the green sub-pixel unit The influence of the display brightness in the adjacent first sub-pixel unit 101 reduces the resolution of the regular dark spots formed at the position of the main supporting column 3 in the display area, thereby further improving the regular dark spot phenomenon of the display panel and improving the display effect.
Optionally, as shown in fig. 1A and 1B, the array substrate 2 includes, on a side facing the color filter substrate 1:
the display device comprises a plurality of gate lines 12 and a plurality of data lines 13, wherein in the display area, the plurality of gate lines 12 are arranged along a first direction X and extend along a second direction Y, the plurality of data lines 13 are arranged along the second direction Y and extend along the first direction X, the first direction X is crossed with the second direction Y, the gate lines 12 and the data lines 13 are crossed in an insulating mode to define a plurality of sub-pixel units 10, and the sub-pixel units 10 comprise first sub-pixel units 101. Specifically, the sub-pixel unit 10 may be provided therein with a switching thin film transistor 14 and a pixel electrode (not shown in the figure), wherein the source 141 of the switching thin film transistor 14 may be electrically connected to the data line 13, the gate 142 may be electrically connected to the gate line 12, and the drain 143 may be electrically connected to the pixel electrode, and after the switching thin film transistor 14 is turned on by a voltage signal on the gate line 12, the data line 13 may transmit a data signal to the pixel electrode through the source 141 and the drain 143 of the switching thin film transistor 14.
Alternatively, as shown in fig. 3, fig. 3 is a cross-sectional view taken along a-a' of fig. 1B, and the first insulating layer 11 is located between the gate line 12 and the data line 13.
Specifically, fig. 3 schematically sets the switching thin film transistor 14 to be "top-gate type", that is, may include a source-drain metal layer (including the source electrode 141 and the drain electrode 143 disposed at the same layer), a first insulating layer 11, a gate electrode 142 and an active layer 144, wherein the drain electrode 143 may be electrically connected to the pixel electrode 15 through a via hole, the source electrode 141 may be disposed at the same layer as the data line 13, the gate electrode 142 may be disposed at the same layer as the gate line 12, and the switching thin film transistor 14 may be turned on by a voltage signal on the gate line 12, the data line 13 may transmit a data signal that is a voltage signal to the pixel electrode 15 through the source electrode 141 and the drain electrode 143 of the switching thin film transistor 14, under the action of the voltage difference between the pixel electrode 15 and the common electrode 16, the liquid crystal molecules in the liquid crystal molecule layer 4 can rotate to transmit light, and thus, liquid crystal display is realized. In the technical solution provided by the embodiment of the present invention, as shown in fig. 3, a first insulating layer 11 may be disposed between a gate line 12 and a data line 13, and at the same time, as shown in fig. 1A and 1B, a groove 111 may be obtained by performing, for example, etching on the first insulating layer 11 in a first sub-pixel unit 101 adjacent to a main support pillar 3 and having a small aperture ratio, wherein, as shown in fig. 1C and 1E, a bottom surface of the groove 111 may be a hollow structure, or as shown in fig. 1C and 1D, a bottom surface 1110 of the groove 111 still has a certain thickness, and after the groove 111 is obtained, a portion of light reflected in a process of propagating in the first insulating layer 11 can be eliminated (as shown in fig. 1E, the bottom surface of the groove 111 is a hollow structure) or reduced (as shown in fig. 1D, the bottom surface 1110 of the groove 111 still has a certain thickness), the transmittance of light in the opening area 1011 of the first sub-pixel unit 101 is increased, and for a certain sub-pixel unit 10, the brightness of the sub-pixel unit in the area corresponding to the light-emitting surface of the liquid crystal display panel 100 can be achieved, that is, the transmittance of light is proportional to the product of the opening ratio of the sub-pixel unit and the transmittance of light, and further, the existence of the groove 111 can increase the brightness of the first sub-pixel unit 101, increase the brightness at the main support column 3, reduce the brightness difference between the main support column 3 and the position where the main support column 3 is not arranged in the display area, reduce the identifiability of the regular dark spot, improve the regular dark spot phenomenon, and improve the display effect. It should be noted that the array substrate 2 may further include interlayer insulating layers 17, 18, 19, and 20 and a liquid crystal alignment layer 21, and in the liquid crystal display panel including the "top gate type" switching thin film transistor, the first insulating layer may further include one or more of the interlayer insulating layers 17, 18, and 20, and the groove may be further disposed on one or more layers including the interlayer insulating layers 17, 18, and 20, which is not limited in this embodiment. In some alternative embodiments, the switching thin film transistor may also be a "bottom gate type", that is, the switching thin film transistor may include a source drain metal layer (including a source electrode and a drain electrode that are disposed in the same layer, where the source electrode may be disposed in the same layer as the data line), an active layer, and a gate electrode (where the gate electrode may be disposed in the same layer as the gate line) that are sequentially stacked from top to bottom, and the first insulating layer may include one or more interlayer insulating layers between the gate line and the data line, that is, the groove may be disposed on the one or more interlayer insulating layers between the gate line and the data line, which is not limited in this disclosure.
Alternatively, as shown in fig. 4A and 4B, fig. 4A is a further cross-sectional view taken along a-a 'of fig. 1B, fig. 4B is a further cross-sectional view taken along a-a' of fig. 1B, and the array substrate 2 further includes:
the touch signal lines 22 are arranged in the display area in a different-layer insulation manner with the data lines 13, and the touch signal lines 22 are positioned on one side of the data lines 13 facing the color film substrate 1;
the first electrode layer 30 is located on one side of the touch signal line 22 facing the color filter substrate 1, and the first insulating layer 11 is located between the first electrode layer 30 and the touch signal line 22.
Specifically, as shown in fig. 4A and 4B, the liquid crystal display panel 100 may have a touch function, and the touch driving circuit may transmit the touch driving signal and/or receive the touch detection signal through the touch signal line 22, whereas in fig. 4A and 4B, the touch signal line 22 and the data line 13 are disposed to overlap and be insulated from each other in a direction perpendicular to the plane of the array substrate 2, which enables a larger aperture ratio to be obtained in the in-cell touch type liquid crystal display panel. In the technical solution provided by the embodiment of the present invention, as shown in fig. 4A or 4B, a first insulating layer 11 is disposed between a first electrode layer 30 and a touch signal line 22, and at the same time, as shown in fig. 1A and 1B, a groove 111 is obtained by performing, for example, etching on the first insulating layer 11 in a first sub-pixel unit 101 adjacent to a main support pillar 3 and having a small aperture ratio, wherein, as shown in fig. 1C and 1E, a bottom surface of the groove 111 is a hollow structure, or as shown in fig. 1C and 1D, a bottom surface 1110 of the groove 111 still has a certain thickness, and after the groove 111 is obtained, a portion of light reflected in the process of propagating in the first insulating layer 11 can be eliminated (as shown in fig. 1E, the bottom surface of the groove 111 is a hollow structure) or reduced (as shown in fig. 1D, the bottom surface 1110 of the groove 111 still has a certain thickness), the transmittance of light in the opening area 1011 of the first sub-pixel unit 101 is increased, and for a certain sub-pixel unit 10, the brightness of the sub-pixel unit in the area corresponding to the light-emitting surface of the liquid crystal display panel 100 can be achieved, that is, the transmittance of light is proportional to the product of the opening ratio of the sub-pixel unit and the transmittance of light, and further, the existence of the groove 111 can increase the brightness of the first sub-pixel unit 101, increase the brightness at the main support column 3, reduce the brightness difference between the main support column 3 and the position where the main support column 3 is not arranged in the display area, reduce the identifiability of the regular dark spot, improve the regular dark spot phenomenon, and improve the display effect.
Alternatively, as shown in fig. 4A, the first electrode layer 30 is a pixel electrode layer 150.
Specifically, as shown in fig. 4A, the first electrode layer 30 may be a pixel electrode layer 150, and the common electrode layer 160 is located on a side of the pixel electrode layer 150 close to the color filter substrate 1.
Alternatively, as shown in fig. 4B, the first electrode layer 30 is the common electrode layer 160.
Specifically, as shown in fig. 4B, the first electrode layer 30 may be a common electrode layer 160, and the pixel electrode layer 150 is located on a side of the common electrode layer 160 close to the color filter substrate 1.
Alternatively, as shown in fig. 1A, 1B, 5A and 5B, fig. 5A is a schematic diagram of another top view structure of the liquid crystal display panel according to the embodiment of the present invention, fig. 5B is a schematic diagram of another top view structure of the liquid crystal display panel according to the embodiment of the present invention, the sub-pixel unit 10 includes a red sub-pixel unit 101R, a green sub-pixel unit 101G and a blue sub-pixel unit 101B, and the touch signal line 22 is located between the red sub-pixel unit 101R and the blue sub-pixel unit 101B in a direction perpendicular to the plane of the array substrate 2;
the main support column 3 overlaps with the red and green sub-pixel units 101R and 101G, respectively; or,
the main support pillar 3 overlaps the blue sub-pixel unit 101B and the green sub-pixel unit 101G, respectively.
Specifically, as shown in fig. 1A, 1B, 5A and 5B, the red sub-pixel unit 101R (substantially displaying red light after light is transmitted), the blue sub-pixel unit 101B (substantially displaying blue light after light is transmitted), and the green sub-pixel unit 101G (substantially displaying green light after light is transmitted) may be repeatedly arranged in the extending direction of the gate line 12 by a minimum repeatable unit including the red sub-pixel unit 101R, the blue sub-pixel unit 101B, and the green sub-pixel unit 101G together in the display region, while remaining unchanged in the extending direction of the data line 13. In the liquid crystal display panel 100, the alignment film (not shown) at the position of the touch signal line 22 is protruded and uneven due to the existence of the touch signal line 22, and when the alignment film in the corresponding region is uneven during rubbing alignment of the liquid crystal molecules, the alignment film in the region is damaged, and the arrangement direction of the liquid crystal molecules corresponding to the region is changed accordingly, resulting in serious dark-state light leakage. When light passes through the sub-pixel units of three colors, namely, the red sub-pixel unit 101R, the green sub-pixel unit 101G, and the blue sub-pixel unit 101B, light synthesis can be performed, and during light synthesis, the contribution of green light to the brightness of the display panel is the largest (i.e., the brightness is the highest), and because the dark-state light leakage generated in the area with the higher brightness is more obvious, when the touch signal line 22 is selected to be disposed on any side of the green sub-pixel unit 101G, because the contribution of green light passing through the green sub-pixel unit 101G to the overall brightness of the display panel is the largest, the touch signal line 22 is selected to be disposed between the red sub-pixel unit 101R and the blue sub-pixel unit 101B due to damage of the alignment film in the corresponding area where the touch signal line 22 is disposed, as shown in fig. 5A and 5B, when dark-state light leakage is generated in the region where the touch signal line 22 is disposed between the red sub-pixel unit 101R and the blue sub-pixel unit 101B, the contribution of the red light and the blue light to the luminance is smaller than the contribution of the green light to the luminance, so that the generated dark-state light leakage is not too significant, the recognizability of the dark-state light leakage is relatively low, and the dark-state light leakage phenomenon caused by rubbing alignment of the touch-control liquid crystal display panel can be improved. As shown in fig. 1A, 1B and 5A, the main support column 3 is disposed to overlap the red sub-pixel unit 101R and the green sub-pixel unit 101G, respectively, in a direction perpendicular to the plane of the array substrate 2, or, as shown in fig. 1A, 1B and 5B, the main support column 3 is disposed to overlap the blue sub-pixel unit 101B and the green sub-pixel unit 101G, respectively, in a direction perpendicular to the plane of the array substrate 2, that is, the main support column 3 and the touch signal line 22 are disposed to be shifted in a direction perpendicular to the plane of the array substrate 2, so as to avoid the main support column 3 and the touch signal line 22 from overlapping to cause an increase in the local cell thickness of the liquid crystal display panel, which is proportional to the transmittance of light, and therefore, when the cell thickness of the liquid crystal display panel is increased, the transmittance of light corresponding to the corresponding region is also increased, further, the transmittance and the brightness of the region are increased, and after the brightness difference between the corresponding region and the brightness of the other region reaches a certain degree, a bright line is formed in the region, so as to avoid the occurrence of the bright line in the region where the touch signal line 22 is located, in the technical solution provided by the embodiment of the present invention, as shown in fig. 1A, 1B and 5A, the main support pillar 3 is disposed between the red sub-pixel unit 101R and the green sub-pixel unit 101G, or, as shown in fig. 1A, 1B and 5B, the main support pillar 3 is disposed between the blue sub-pixel unit 101B and the green sub-pixel unit 101G. For the touch control type liquid crystal display panel, the technical scheme provided by the embodiment of the invention can reduce dark state light leakage in the area where the touch control signal line is positioned, avoid obvious bright lines, improve the regular dark spot phenomenon and improve the display effect. It should be noted that, in the case of not considering the dark-state light leakage caused by rubbing alignment in the area where the touch signal line 22 is located, the touch signal line 22 may also be disposed between the blue sub-pixel unit and the green sub-pixel unit, or between the red sub-pixel unit and the green sub-pixel unit, wherein, preferably, the main support column 3 and the touch signal line 22 are disposed in a staggered manner in a direction perpendicular to the plane of the array substrate.
Alternatively, as shown in fig. 4A, 4B, 5A, and 5B, the liquid crystal display panel 100 is a negative liquid crystal display panel.
Specifically, the liquid crystal molecules in the liquid crystal molecule layer 4 are negative liquid crystal molecules, the negative liquid crystal molecules can obtain a higher transmittance than the positive liquid crystal molecules, and due to the difference in the rubbing alignment directions of the negative liquid crystal molecules and the positive liquid crystal molecules, when the liquid crystal molecules in the liquid crystal molecule layer 4 are negative liquid crystal molecules, the dark-state light leakage degree of the region where the touch signal line 22 is located can be reduced.
Optionally, as shown in fig. 6, fig. 6 is a schematic top view structure diagram of a self-capacitance touch electrode layer according to an embodiment of the present invention, and the array substrate further includes a self-capacitance touch electrode layer 23.
Optionally, as shown in fig. 6, the self-contained touch electrode layer 23 includes a plurality of touch electrode blocks 230 arranged in an array, and each touch electrode block 230 is electrically connected to at least one of the touch signal lines 22.
Specifically, as shown in fig. 6, the self-contained touch electrode layer 23 includes a plurality of touch electrode blocks 230 arranged in an array, each touch electrode block 230 may form a capacitor, i.e., a self-capacitance channel, with a ground terminal with zero potential, for example, each touch electrode block 230 respectively realizes input of a touch driving signal and output of a touch detection signal through a touch signal line 22 electrically connected thereto, and the liquid crystal display panel 100 determines a touch position by using the touch driving signal and the touch detection signal.
Optionally, as shown in fig. 6, the touch electrode block 230 is electrically connected to the touch signal line 22 through the via 220.
Optionally, as shown in fig. 5A, 5B and 6, the self-capacitance touch electrode layer 23 is reused as a common electrode layer.
Specifically, as shown in fig. 5A, 5B and 6, the liquid crystal display panel 100 can be divided into a touch stage and a display stage in the working period, in the touch stage, the liquid crystal display panel 100 can perform touch control, the touch electrode block 230 can realize the input of the touch driving signal and the output of the touch detection signal through the touch signal line 22 electrically connected thereto, in the display stage, the self-contained touch electrode layer 23 is multiplexed as a common electrode layer, the liquid crystal display panel 100 can perform display control, and the touch electrode block 230 can receive a common voltage signal through the touch signal line 22 electrically connected thereto, thereby realizing liquid crystal display, wherein the touch stage and the display stage can be alternately interchanged.
Fig. 7 is a schematic structural diagram of a display device according to an embodiment of the present invention.
Based on the same inventive concept, an embodiment of the present invention further provides a display device, where the display device 200 includes the liquid crystal display panel 100 described above, as shown in fig. 7, the display device 200 may be a mobile phone, and includes the liquid crystal display panel 100 described in any of the above embodiments. In addition, in this embodiment, the display device 200 may also be a display device such as a watch, a computer, a television, and the like, which is not limited in this respect. Since the display device provided by this embodiment includes the liquid crystal display panel described in the above embodiment, the display device also has the advantages related to the liquid crystal display panel, and the implementation of the display device can refer to the above embodiment of the liquid crystal display panel, and repeated descriptions are omitted.
The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. 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 (16)
1. A liquid crystal display panel, comprising:
a display area, a non-display area surrounding the display area;
the color film substrate is arranged opposite to the array substrate;
the main supporting columns are positioned between the color film substrate and the array substrate;
the first sub-pixel unit is positioned in the display area, and the main supporting column and the first sub-pixel unit are overlapped with each other in a direction perpendicular to the plane of the array substrate;
a first insulating layer having a groove in an opening region of the first sub-pixel unit.
2. The liquid crystal display panel of claim 1, wherein the groove is a hollow structure.
3. The liquid crystal display panel according to claim 1 or 2, wherein the groove has the same shape as an opening region of the first sub-pixel unit.
4. The liquid crystal display panel of claim 3, wherein the groove has the same area as an opening area of the first sub-pixel unit.
5. The liquid crystal display panel according to claim 1 or 2, wherein the first sub-pixel unit includes a red sub-pixel unit and a blue sub-pixel unit, and the red sub-pixel unit and the blue sub-pixel unit are overlapped with each other in a direction perpendicular to a plane of the array substrate for the same main support column.
6. The liquid crystal display panel according to claim 1 or 2, wherein a side of the array substrate facing the color filter substrate includes:
the display device comprises a plurality of gate lines and a plurality of data lines, wherein the gate lines are arranged along a first direction and extend along a second direction, the data lines are arranged along the second direction and extend along the first direction, the first direction is crossed with the second direction, the gate lines and the data lines are crossed in an insulating mode to define a plurality of sub-pixel units, and the sub-pixel units comprise first sub-pixel units.
7. The liquid crystal display panel of claim 6, wherein the first insulating layer is between the gate line and the data line.
8. The liquid crystal display panel of claim 6, wherein the array substrate further comprises:
the touch signal lines and the data lines are arranged in the display area in a different-layer insulation mode, and the touch signal lines are positioned on one side, facing the color film substrate, of the data lines;
the first electrode layer is positioned on one side, facing the color film substrate, of the touch signal line, and the first insulating layer is positioned between the first electrode layer and the touch signal line.
9. The liquid crystal display panel according to claim 8, wherein the first electrode layer is a pixel electrode layer or a common electrode layer.
10. The liquid crystal display panel of claim 8, wherein the sub-pixel units comprise a red sub-pixel unit, a green sub-pixel unit, and a blue sub-pixel unit, and the touch signal line is located between the red sub-pixel unit and the blue sub-pixel unit in a direction perpendicular to a plane of the array substrate;
the main supporting columns are respectively overlapped with the red sub-pixel units and the green sub-pixel units; or,
the main supporting columns are respectively overlapped with the blue sub-pixel units and the green sub-pixel units.
11. The liquid crystal display panel according to claim 10, wherein the liquid crystal display panel is a negative liquid crystal display panel.
12. The liquid crystal display panel of claim 8, wherein the array substrate further comprises a self-contained touch electrode layer.
13. The lcd panel of claim 12, wherein the self-contained touch electrode layer comprises a plurality of touch electrode blocks arranged in an array, and each of the touch electrode blocks is electrically connected to at least one of the touch signal lines.
14. The liquid crystal display panel according to claim 13, wherein the touch electrode block is electrically connected to the touch signal line through a via hole.
15. The liquid crystal display panel of claim 13, wherein the self-contained touch electrode layer is multiplexed as a common electrode layer.
16. A display device comprising the liquid crystal display panel according to any one of claims 1 to 15.
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Application publication date: 20170901 |