CN107290879B - Light shield for liquid crystal display panel - Google Patents
Light shield for liquid crystal display panel Download PDFInfo
- Publication number
- CN107290879B CN107290879B CN201710684990.9A CN201710684990A CN107290879B CN 107290879 B CN107290879 B CN 107290879B CN 201710684990 A CN201710684990 A CN 201710684990A CN 107290879 B CN107290879 B CN 107290879B
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- shading
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- light shielding
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- area
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- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 30
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 239000002184 metal Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 238000003491 array Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
Images
Classifications
-
- 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
- G02F1/1303—Apparatus specially adapted to the manufacture of LCDs
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F1/00—Originals for photomechanical production of textured or patterned surfaces, e.g., masks, photo-masks, reticles; Mask blanks or pellicles therefor; Containers specially adapted therefor; Preparation thereof
- G03F1/26—Phase shift masks [PSM]; PSM blanks; Preparation thereof
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Liquid Crystal (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Optics & Photonics (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The invention provides a light shield for a liquid crystal display panel, which comprises a cover plate, a light shielding area and a non-light shielding area, wherein the light shielding area and the non-light shielding area are arranged on the cover plate, the light shielding area comprises a first light shielding pattern and a second light shielding pattern, the first light shielding pattern is positioned in the center of the cover plate, and the second light shielding pattern is positioned at the edge of the cover plate. By using the mask in this embodiment as an exposure mask of a liquid crystal display panel, the exposure efficiency can be improved, and the production cost can be reduced.
Description
Technical Field
The invention relates to the field of liquid crystal display manufacturing, in particular to a light shield for a liquid crystal display panel.
Background
In completing the production of TFT arrays and color filters in liquid crystal display panels, it is indispensable to complete exposure using a photomask. In the face of the improvement of the performance and quality of the lcd panel for the market demand, the specification and quality of the mask are decisively affected. Now, with the upsizing and high efficiency of the liquid crystal display panel, the photomask is refined and continuously upsized with the improvement. The size and dimension of the mask are increasing to improve the exposure efficiency. In the manufacturing process of the existing liquid crystal display panel, the required pattern can be obtained by exposure for many times, and the efficiency is low.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides a light shield for a liquid crystal display panel, which can improve the exposure efficiency and reduce the production cost.
The specific technical scheme provided by the invention is as follows: the light shade for the liquid crystal display panel comprises a cover plate, a light shading area and a non-light shading area, wherein the light shading area and the non-light shading area are arranged on the cover plate, the light shading area comprises a first light shading pattern and a second light shading pattern, the first light shading pattern is positioned in the center of the cover plate, and the second light shading pattern is positioned at the edge of the cover plate.
Further, the second shading pattern comprises an interface area and a wiring area connected between the interface area and the first shading pattern.
Further, the interface region includes a first light shielding portion located above the first light shielding pattern.
Further, the first shading part comprises a plurality of first shading blocks arranged at intervals, and the plurality of first shading blocks are connected with the first shading patterns through the wiring areas respectively.
Furthermore, the first shading blocks are linearly arranged, and the intervals between every two adjacent first shading blocks are equal.
Further, the interface region further includes a second light shielding portion located below the first light shielding pattern.
Further, the second light shielding portion and the first light shielding portion are symmetrical with respect to the first light shielding pattern.
Further, the second shading part comprises a plurality of second shading blocks arranged at intervals, and the plurality of second shading blocks are respectively connected with the first shading pattern through the wiring area.
Furthermore, the plurality of second shading blocks are linearly arranged, and the intervals between every two adjacent second shading blocks are equal.
The light shade for the liquid crystal display panel comprises a cover plate, a light shading area and a non-light shading area, wherein the light shading area and the non-light shading area are arranged on the cover plate, the light shading area comprises a first light shading pattern and a second light shading pattern, the first light shading pattern is located in the center of the cover plate, and the second light shading pattern is located at the edge of the cover plate. By using the mask in this embodiment as an exposure mask of a liquid crystal display panel, the exposure efficiency can be improved, and the production cost can be reduced.
Drawings
The technical solution and other advantages of the present invention will become apparent from the following detailed description of specific embodiments of the present invention, which is to be read in connection with the accompanying drawings.
FIG. 1 is a schematic diagram of the structure of the mask of embodiment 1;
FIG. 2 is a schematic diagram of the structure of embodiment 1 with two masks superimposed;
fig. 3 is a schematic structural diagram of the mask of embodiment 2.
Detailed Description
Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the specific embodiments set forth herein. Rather, these embodiments are provided to explain the principles of the invention and its practical application to thereby enable others skilled in the art to understand the invention for various embodiments and with various modifications as are suited to the particular use contemplated. In the drawings, like reference numerals will be used to refer to like elements throughout.
Example 1
Referring to fig. 1, the light shield for the liquid crystal display panel in the present embodiment includes a cover plate 1, and a light shielding region 10 and a non-light shielding region 20 disposed on the cover plate 1, wherein the light shielding region 10 includes a first light shielding pattern 11 and a second light shielding pattern 12, the first light shielding pattern 11 is located at the center of the cover plate 1, and the second light shielding pattern 12 is located at the edge of the cover plate 1.
The light-shielding region 10 in this embodiment corresponds to a pixel unit of the lcd panel, and the non-light-shielding region 20 corresponds to a non-pixel unit of the lcd panel. The first light shielding pattern 11 corresponds to a display area in the pixel unit, and the second light shielding pattern 12 corresponds to a wiring area of the pixel unit.
The second light-shielding pattern 12 includes an interface region 12a and a routing region 12b connected between the interface region 12a and the first light-shielding pattern 11. The interface area 12a corresponds to a signal interface in the wiring area of the liquid crystal display panel, and the wiring area 12b corresponds to a metal wiring in the wiring area of the liquid crystal display panel.
The interface region 12a includes a first light shielding portion located above the first light shielding pattern 11. The first light shielding portion includes a plurality of first light shielding blocks 120 arranged at intervals, and the plurality of first light shielding blocks 120 are connected to the first light shielding patterns 11 through the routing areas 12b, respectively. One of the first light-shielding blocks 120 corresponds to a signal interface in the wiring area of the liquid crystal display panel, one of the first light-shielding blocks 120 corresponds to one of the wires in the wiring area 12b, and each of the first light-shielding blocks 120 is connected to the first light-shielding pattern 11 through the one of the wires.
The plurality of first light shielding blocks 120 are linearly disposed above the first light shielding pattern 11, and the intervals between two adjacent first light shielding blocks 120 are equal.
The interface region 12a in the present embodiment further includes a second light shielding portion located below the first light shielding pattern 11. Wherein the second light shielding portions and the first light shielding portions are symmetrical with respect to the first light shielding pattern 11. The second light shielding portion includes a plurality of second light shielding blocks 121 disposed at intervals, and the plurality of second light shielding blocks 121 are connected to the first light shielding patterns 11 through the routing areas 12b, respectively. One of the second light-shielding blocks 121 corresponds to a signal interface in the wiring area of the liquid crystal display panel, one of the second light-shielding blocks 121 corresponds to one of the wirings in the wiring area 12b, and each of the second light-shielding blocks 121 is connected to the first light-shielding pattern 11 through the one of the wirings. The first light shielding block 120 and the second light shielding block 121 are connected to the first light shielding pattern 11 through the same trace in the trace region 12 b.
The plurality of second light shielding blocks 121 are linearly disposed below the first light shielding pattern 11, and the intervals between two adjacent second light shielding blocks 121 are equal.
The photomask in embodiment 1 is described below by way of specific examples. The first shading portion in this example includes three first shading blocks 120 arranged at intervals, where three first shading blocks 120 from left to right are defined as a first shading block 120, a second first shading block 120, and a third first shading block 120, respectively, the routing area 12b includes three traces corresponding to the three first shading blocks 120 one to one, where a first trace corresponding to the first shading block 120 is defined as a first trace, a second trace corresponding to the second first shading block 120a is defined as a second trace, and a third trace corresponding to the third first shading block 120 is defined as a third trace.
Each of the routing lines is C-shaped, and each of the routing lines includes two horizontal portions respectively located above and below the first light-shielding pattern 11 and a vertical portion connected between the two horizontal portions. The first wire is located at the innermost side, i.e., the shortest distance from the first light-shielding pattern 11, the third wire is located at the outermost side, i.e., the longest distance from the first light-shielding pattern 11, and the second wire is located between the first wire and the third wire.
The first light shielding block 120 is connected to the first light shielding pattern 11 through two horizontal portions and a vertical portion of the first routing line, the second first light shielding block 120 is connected to the first light shielding pattern 11 through two horizontal portions and a vertical portion of the second routing line, and the third first light shielding block 120 is connected to the first light shielding pattern 11 through a horizontal portion and a vertical portion of the third routing line above the first light shielding pattern 11.
The second light-shielding portion and the first light-shielding portion are symmetrical with respect to the first light-shielding pattern 11, and the first light-shielding block 120 and the second light-shielding block 121 are connected to the first light-shielding pattern 11 through the same trace in the trace region 12b, which is not described herein again.
The first light-shielding pattern 11 and the second light-shielding pattern 12 can be obtained simultaneously by using the light shield in the embodiment as the light shield of the liquid crystal display panel, so that the exposure times of the liquid crystal display panel are reduced, the exposure efficiency of the liquid crystal display panel is improved, and the production cost of the liquid crystal display panel is reduced.
Example 2
Referring to fig. 2, the present embodiment is an embodiment modified from embodiment 1, and the interface region 12a in the present embodiment includes only the first light shielding portion located above the first light shielding pattern 11.
Referring to fig. 3, it can be seen from embodiment 1 that, when exposing the liquid crystal display panel, the second light shielding portions between two adjacent light shields overlap (as shown by the dashed line in fig. 3), which increases the metal layer and the metal layer crossover on the liquid crystal display panel, thereby reducing the electrostatic discharge effect of the liquid crystal display panel.
Therefore, in the present embodiment, these overlapped portions are removed, so that the electrostatic discharge effect of the liquid crystal display panel is improved by reducing the metal layer and the metal layer crossover on the liquid crystal display panel.
Embodiment 2 will be described in detail below by taking the example in embodiment 1 as an example. The first shading portion includes three first shading blocks 120 arranged at intervals, where three first shading blocks 120 from left to right are defined as a first shading block 120, a second first shading block 120, and a third first shading block 120, respectively, the routing area 12b includes three routing lines corresponding to the three first shading blocks 120 one by one, where a first routing line corresponding to the first shading block 120a is defined as a first routing line, a second routing line corresponding to the second first shading block 120 is defined as a second routing line, and a third routing line corresponding to the third first shading block 120 is defined as a third routing line.
The first routing wire and the second routing wire are both in a C shape and comprise two horizontal parts respectively positioned above and below the first shading pattern 11 and a vertical part connected between the two horizontal parts. The first wire is located at the innermost side, i.e., the shortest distance from the first light-shielding pattern 11, the third wire is located at the outermost side, i.e., the longest distance from the first light-shielding pattern 11, and the second wire is located between the first wire and the third wire. The first light shielding block 120 is connected to the first light shielding pattern 11 through the two horizontal portions and the vertical portion of the first wire, and the second first light shielding block 120 is connected to the first light shielding pattern 11 through the two horizontal portions and the vertical portion of the second wire.
Since the third first light shielding block 120 of embodiment 1 is connected to the first light shielding pattern 11 through the horizontal portion and the vertical portion of the third wire above the first light shielding pattern 11, the horizontal portion of the third wire below the first light shielding pattern 11 is omitted in embodiment 2.
The mask of the present embodiment can improve the electrostatic discharge effect of the liquid crystal display panel and improve the quality of the liquid crystal display panel on the basis of the mask of embodiment 1.
The foregoing is directed to embodiments of the present application and it is noted that numerous modifications and adaptations may be made by those skilled in the art without departing from the principles of the present application and are intended to be within the scope of the present application.
Claims (2)
1. The photomask for the liquid crystal display panel is characterized by comprising a cover plate, a shading area and a non-shading area, wherein the shading area and the non-shading area are arranged on the cover plate, the shading area comprises a first shading pattern and a second shading pattern, the first shading pattern is positioned in the center of the cover plate, the second shading pattern is positioned at the edge of the cover plate, the second shading pattern comprises an interface area and a wiring area connected between the interface area and the first shading pattern, the interface area comprises a first shading part positioned above the first shading pattern, the first shading part comprises a plurality of first shading blocks arranged at intervals, and the wiring area comprises a plurality of wirings; the plurality of first shading blocks are connected with the first shading patterns through the plurality of wires respectively; the routing wire positioned on the outermost side of the first light shielding pattern in the plurality of routing wires is composed of a horizontal part positioned above the first light shielding pattern and a vertical part positioned on the left side of the first light shielding pattern.
2. The mask according to claim 1, wherein the first light-shielding blocks are linearly arranged and the intervals between two adjacent first light-shielding blocks are equal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710684990.9A CN107290879B (en) | 2017-08-11 | 2017-08-11 | Light shield for liquid crystal display panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710684990.9A CN107290879B (en) | 2017-08-11 | 2017-08-11 | Light shield for liquid crystal display panel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107290879A CN107290879A (en) | 2017-10-24 |
| CN107290879B true CN107290879B (en) | 2020-06-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710684990.9A Active CN107290879B (en) | 2017-08-11 | 2017-08-11 | Light shield for liquid crystal display panel |
Country Status (1)
| Country | Link |
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| CN (1) | CN107290879B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107728346A (en) * | 2017-10-25 | 2018-02-23 | 深圳市华星光电技术有限公司 | Wiring structure of display panel and preparation method thereof |
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| CN107290879A (en) | 2017-10-24 |
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