An optical test structure for a backlight display module

Abstract

An optical test structure of a backlight display module includes: a TFT liquid crystal display screen, a backlight plate and a positioning plate; a TFT liquid crystal display screen, a first positioning mark is arranged in the center of the TFT liquid crystal display screen, and a display FPC is arranged at the bottom of the TFT liquid crystal display screen; a backlight plate, a second positioning mark is arranged in the center of the backlight plate, and a backlight FPC is arranged on one side of the bottom of the backlight plate; a positioning plate, the positioning plate includes a positioning ring, and alignment plates fixed on both sides of the positioning ring, and a top alignment plate. The optical test structure of the backlight display module of the utility model does not need to worry about the assembly deviation during the assembly process, and does not need to use the test equipment to align the center point. The test equipment (for example: CS2000) can directly move the probe to the circle in the figure for testing. In the process of using the equipment, the test efficiency is accelerated, and the time occupied by the test equipment is reduced, thereby improving the equipment utilization efficiency, accelerating the test efficiency and enhancing its accuracy.

Description

Technical Field

[0001] The utility model relates to the technical field of display module testing, in particular to an optical testing structure of a backlight display module. Background Art

[0002] At present, in the research and development stage of current display screens, it is often necessary to use different TFT LCD main screens with different backlights for optical testing to evaluate the optical effect after matching. However, during the test, the TFT LCD main screen and the backlight need to be attached to each other, and the centers of the TFT LCD main screen and the backlight need to overlap each other in order to perform subsequent optical effect evaluation. Therefore, an optical test structure of a backlight display module is designed, which allows testers to quickly and accurately align the TFT LCD main screen and the backlight together. Utility Model Content

[0003] The purpose of the utility model is to overcome the deficiencies in the prior art and provide an optical testing structure for a backlight display module.

[0004] The purpose of this utility model is achieved through the following technical solutions:

[0005] An optical test structure of a backlight display module comprises: a TFT liquid crystal display screen, a backlight plate and a positioning plate; the TFT liquid crystal display screen, wherein a first positioning mark is arranged at the center of the TFT liquid crystal display screen, and a display FPC is arranged at the bottom of the TFT liquid crystal display screen; the backlight plate, wherein a second positioning mark is arranged at the center of the backlight plate, and a backlight FPC is arranged on one side of the bottom of the backlight plate; the positioning plate, wherein the positioning plate comprises a positioning ring, alignment plates fixed on both sides of the positioning ring, and a top alignment plate.

[0006] In one of the embodiments, the length and width of the front side of the TFT liquid crystal display screen are the same as the length and width of the front side of the backlight panel, and the shapes of the front side of the TFT liquid crystal display screen and the backlight panel are both square.

[0007] In one of the embodiments, the first positioning mark is set at the center of the front side of the TFT liquid crystal display screen by means of the positioning plate or software coding, and the front side of the first positioning mark is in the shape of a circular ring.

[0008] In one of the embodiments, the second positioning mark is set at the center of the front side of the TFT liquid crystal display screen by means of the positioning plate or software coding, and the front side of the second positioning mark is in the shape of a circular ring.

[0009] In one embodiment, the diameters of the front sides of the first positioning mark and the second positioning mark are the same, and when the TFT liquid crystal display screen and the backlight panel overlap each other, the first positioning mark and the second positioning mark are perpendicular to each other and overlap each other.

[0010] In one of the embodiments, the length of the front side of the alignment plate at the top of the positioning plate is the same as half the length of the front side of the TFT liquid crystal display screen, and the front side width is the same as the front side width of the TFT liquid crystal display screen.

[0011] In one of the embodiments, the diameter of the front side of the positioning ring of the positioning plate is the same as the diameter of the front side of the first positioning mark, and when the positioning plate is attached to the TFT liquid crystal display screen, the positioning ring and the first positioning mark overlap with each other.

[0012] In one of the embodiments, the display FPC is disposed at the center of the bottom of the TFT liquid crystal display screen, and the display FPC is a flexible printed circuit board.

[0013] In one of the embodiments, the backlight FPC is disposed on the right side of the bottom of the backlight panel, and a side of the backlight FPC away from the backlight panel is electrically connected to a CPU in the display module.

[0014] In one of the embodiments, the positioning ring of the positioning plate is integrally formed with the alignment plates on its left and right sides, and the width of the front side thereof is the same as the width of the front side of the TFT liquid crystal display screen.

[0015] Compared with the prior art, the utility model has at least the following advantages:

[0016] The optical test structure of the backlight display module of the utility model draws the first positioning mark and the second positioning mark on the backlight and the TFT liquid crystal display screen by means of a positioning plate or code, so that when matching the test optical data, it can be directly assembled, as long as the center circles are fitted together, there is no need to worry about the assembly deviation during the assembly process, and there is no need to use the test equipment to align the center point. The test equipment (for example: CS2000) can directly move the probe to the circle in the figure for testing. In the process of using the equipment, the test efficiency is accelerated, the time occupied by the test equipment is reduced, thereby improving the equipment utilization efficiency, accelerating the test efficiency and enhancing its accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 This is a front overall schematic diagram of the optical test structure of the backlight display module of the utility model;

[0019] Figure 2 This is a schematic diagram of the lamination and positioning of the TFT liquid crystal display screen and the positioning plate of the optical test structure of the backlight display module of the utility model;

[0020] Figure 3 It is a schematic diagram of the lamination and positioning of the TFT liquid crystal display screen and the backlight panel of the optical test structure of the backlight display module of the utility model.

[0021] In the figure: 1. TFT liquid crystal display screen; 11. first positioning mark; 12. display FPC; 2. backlight plate; 21. second positioning mark; 22. backlight FPC; 3. positioning plate. DETAILED DESCRIPTION

[0022] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively with reference to the relevant drawings. The drawings provide preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thoroughly and comprehensively understood.

[0023] In the description of the present application, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0024] Unless otherwise clearly stipulated and limited, terms such as "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0026] like Figure 1-3 As shown, an optical test structure of a backlight display module includes: a TFT liquid crystal display screen 1, a backlight panel 2 and a positioning plate 3; the TFT liquid crystal display screen 1, the first positioning mark 11 is arranged in the center of the TFT liquid crystal display screen 1, and the display FPC 12 is arranged at the bottom of the TFT liquid crystal display screen 1; the backlight panel 2, the second positioning mark 21 is arranged in the center of the backlight panel 2, and the backlight FPC 22 is arranged on one side of the bottom of the backlight panel 2; the positioning plate 3, the positioning plate 3 includes a positioning ring, and alignment plates fixed on both sides of the positioning ring, and a top alignment plate. It should be noted that the positioning plate 3 is a tool for assisting the staff to draw the first positioning mark 11 and the second positioning mark 21 in the TFT liquid crystal display screen 1 and the backlight panel 2, so the TFT liquid crystal display screen 1 and the backlight panel 2 have two ways to make positioning marks in their centers, allowing the staff to make corresponding choices according to different situations.

[0027] like Figure 1-3 As shown, in one embodiment, the length and width of the front of the TFT liquid crystal display screen 1 are the same as the length and width of the front of the backlight panel 2, and the shapes of the front of the TFT liquid crystal display screen 1 and the backlight panel 2 are both square. It should be noted that the TFT liquid crystal display screen 1 and the backlight panel 2 used for testing are the same in size and shape.

[0028] like Figure 1-3 As shown, in one embodiment, the first positioning mark 11 is set at the center of the front of the TFT liquid crystal display screen 1 by means of a positioning plate 3 or software coding, and the shape of the front of the first positioning mark 11 is a circular ring. The second positioning mark 21 is set at the center of the front of the TFT liquid crystal display screen 1 by means of a positioning plate 3 or software coding, and the shape of the front of the second positioning mark 21 is a circular ring. It should be noted that when it is necessary to match the test optical data, the TFT liquid crystal display screen 1 and the backlight panel 2 can be directly assembled, and only the first positioning mark 11 and the second positioning mark 21 at the center need to be attached together, so there is no need to use a test device to align the center point.

[0029] like Figure 1-3As shown, in one embodiment, the diameters of the front of the first positioning mark 11 and the second positioning mark 21 are the same, and when the TFT liquid crystal display screen 1 and the backlight panel 2 overlap each other, the first positioning mark 11 and the second positioning mark 21 will be perpendicular to each other and overlap each other. It should be noted that when the first positioning mark 11 and the second positioning mark 21 overlap each other, the TFT liquid crystal display screen 1 and the backlight panel 2 can be accurately overlapped, so there is no need to worry about assembly deviation during the assembly process, and there is no need to use testing equipment to align the center point.

[0030] like Figure 1-3 As shown, in one embodiment, the length of the front side of the alignment plate at the top of the positioning plate 3 is the same as half the length of the front side of the TFT liquid crystal display screen 1, and its front side width is the same as the front side width of the TFT liquid crystal display screen 1. The diameter of the front side of the positioning ring of the positioning plate 3 is the same as the diameter of the front side of the first positioning mark 11, and when the positioning plate 3 is attached to the TFT liquid crystal display screen 1, the positioning ring will overlap with the first positioning mark 11. It should be noted that this design can facilitate the staff to draw the first positioning mark 11 in the center of the TFT liquid crystal display screen 1 without using software.

[0031] like Figure 1-3 As shown, in one embodiment, the display FPC 12 is arranged at the center of the bottom of the TFT liquid crystal display screen 1, and the display FPC 12 is a flexible circuit board. It should be noted that the display FPC 12 can be bent to the back of the TFT liquid crystal display screen 1 to hide it.

[0032] like Figure 1-3 As shown, in one embodiment, the backlight FPC 22 is arranged on the right side of the bottom of the backlight plate 2, and the side of the backlight FPC 22 away from the backlight plate 2 is electrically connected to the CPU in the display module. It should be noted that the backlight FPC 22 is also electrically connected to the CPU in the display module.

[0033] like Figure 1-3 As shown, in one embodiment, the positioning ring of the positioning plate 3 is integrally formed with the alignment plates on its left and right sides, and the width of the front side thereof is the same as the width of the front side of the TFT liquid crystal display screen 1. It should be noted that this design allows the alignment plates on the top and left and right sides of the positioning plate 3 to be aligned with the top and left and right edges of the TFT liquid crystal display screen 1, so as to locate the center of the TFT liquid crystal display screen 1, and draw a positioning mark through the positioning ring, and the lengths of the left and right sides and the top alignment plates of the positioning plate 3 are all corresponding to the lengths of display modules of different sizes, so as to adapt to TFT liquid crystal display screens 1 and backlight panels 2 of different specifications.

[0034] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. An optical test structure for a backlight display module, characterized in that: include: TFT liquid crystal display screen (1), backlight panel (2) and positioning panel (3); A TFT liquid crystal display screen (1), wherein a first positioning mark (11) is arranged at the center of the TFT liquid crystal display screen (1), and a display FPC (12) is arranged at the bottom of the TFT liquid crystal display screen (1); A backlight panel (2), wherein a second positioning mark (21) is arranged at the center of the backlight panel (2), and a backlight FPC (22) is arranged at one side of the bottom of the backlight panel (2); When the TFT liquid crystal display screen (1) and the backlight panel (2) are optically tested, they are assembled and overlapped together, and at this time, the first positioning mark (11) and the second positioning mark (21) are also vertically overlapped together to achieve accurate positioning; A positioning plate (3), the positioning plate (3) comprising a positioning ring, alignment plates fixed on both sides of the positioning ring, and a top alignment plate.

2. The optical test structure of the backlight display module according to claim 1, characterized in that: The length and width of the front side of the TFT liquid crystal display screen (1) are the same as the length and width of the front side of the backlight panel (2), and the shapes of the front sides of the TFT liquid crystal display screen (1) and the backlight panel (2) are both square.

3. The optical test structure of the backlight display module according to claim 1, characterized in that: The first positioning mark (11) is arranged at the center of the front face of the TFT liquid crystal display screen (1) by means of the positioning plate (3) or software coding, and the front face of the first positioning mark (11) is in the shape of a circular ring.

4. The optical test structure of the backlight display module according to claim 1, characterized in that: The second positioning mark (21) is arranged at the center of the front face of the TFT liquid crystal display screen (1) by means of the positioning plate (3) or software coding, and the front face of the second positioning mark (21) is in the shape of a circular ring.

5. The optical test structure of the backlight display module according to claim 1, characterized in that: The first positioning mark (11) and the second positioning mark (21) have the same diameter on the front side, and when the TFT liquid crystal display screen (1) and the backlight panel (2) overlap each other, the first positioning mark (11) and the second positioning mark (21) are perpendicular to each other and overlap each other.

6. The optical test structure of the backlight display module according to claim 1, characterized in that: The length of the front side of the alignment plate at the top of the positioning plate (3) is the same as half the length of the front side of the TFT liquid crystal display screen (1), and the width of the front side is the same as the width of the front side of the TFT liquid crystal display screen (1).

7. The optical test structure of the backlight display module according to claim 1, characterized in that: The diameter of the front side of the positioning ring of the positioning plate (3) is the same as the diameter of the front side of the first positioning mark (11), and when the positioning plate (3) is attached to the TFT liquid crystal display screen (1), the positioning ring and the first positioning mark (11) overlap with each other.

8. The optical test structure of the backlight display module according to claim 1, characterized in that: The display FPC (12) is arranged at the center of the bottom of the TFT liquid crystal display screen (1), and the display FPC (12) is a flexible circuit board.

9. The optical test structure of the backlight display module according to claim 1, characterized in that: The backlight FPC (22) is arranged on the right side of the bottom of the backlight panel (2), and the side of the backlight FPC (22) away from the backlight panel (2) is electrically connected to the CPU in the display module.

10. The optical test structure of the backlight display module according to claim 1, characterized in that: The positioning ring of the positioning plate (3) is integrally formed with the alignment plates on its left and right sides, and the width of the front side thereof is the same as the width of the front side of the TFT liquid crystal display screen (1).

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