General optical test platform for liquid crystal module

Abstract

The utility model discloses a general optical test platform for a liquid crystal module, which comprises a bottom plate, an optical test platform and an optical test platform, the four OD heightening supports are arranged on the periphery of the upper surface of the bottom plate; the support is used for supporting diffusion plates; a bottom plate in the OD heightening bracket is used for placing a light bar; the four OC supporting brackets are arranged on the periphery of the side face of the bottom plate; the support is used for supporting OC; and the diaphragm is arranged on the diffusion plate. When the optical test platform is used for lens debugging, the influence caused by poor precision of parts of a hand plate and a back plate can be well eliminated, and the accuracy of lens debugging is ensured to the greatest extent.

Description

Technical Field

[0001] The utility model relates to the technical field of testing platforms, and more particularly to a universal optical testing platform for liquid crystal modules. Background Art

[0002] For LCD TVs with a new optical architecture, the conventional method for testing the subjective optical effects is to use a prototype. The back panel has many features such as ribs and holes, and the molding is complex, the flatness is poor, and the OD height accuracy deviation is large. The measured subjective optical effects are often unsatisfactory. When the back panel with poor flatness and OD accuracy of the prototype is used for lens debugging, the debugged lenses have large deviations. Utility Model Content

[0003] The purpose of the present invention is to provide a universal optical testing platform for liquid crystal modules, in order to solve the technical problems in the background technology.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A universal optical testing platform for liquid crystal modules, comprising:

[0006] a bottom plate, the bottom plate serving as a support;

[0007] OD raising brackets, four OD raising brackets are arranged around the upper surface of the base plate; used to support the diffuser plate; the base plate inside the OD raising brackets is used to place the light bar;

[0008] OC support brackets, four of which are arranged around the sides of the base plate and are used to support the OC;

[0009] The diaphragm is arranged on the diffusion plate.

[0010] In some embodiments, a countersunk groove is provided in the middle of the OC support bracket, and the OC support bracket and the base plate are fixedly connected by screws arranged in the countersunk groove.

[0011] In some embodiments, an OD raising bracket limiting groove is opened on the base plate, and an OD raising bracket positioning rib is provided at the bottom of the OD raising bracket. The OD raising bracket positioning rib is arranged in the OD raising bracket limiting groove to realize the positioning of the OD raising bracket.

[0012] In some embodiments, the OD raising bracket is provided with an extension portion on a side away from the OC supporting bracket, and the OC supporting bracket is fixed to the base plate by screws provided on the extension portion.

[0013] In some embodiments, an inclined reflective paper is provided between the OD raising bracket and the bottom plate.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] This application features a novel structure and strong practicality. Using thick bakelite or aluminum CNC-machined base plates, OD pads, and OC support brackets, the assembled test platform ensures both precision and strength. Using this optical test platform for lens debugging effectively eliminates the impact of poorly precision prototype backplane components, ensuring maximum accuracy in lens debugging. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the universal optical testing platform for liquid crystal modules of the present invention.

[0017] Figure 2 A partial cross-sectional view of the optical testing platform of this utility model

[0018] Illustration: 1-base plate, 2-OD heightening bracket, 3-OC support bracket, 4-light bar, 5-reflective paper, 6-diffuser plate, 7-diaphragm, 8-OC, 11-OD heightening bracket limit groove, 12-light bar adapter plate avoidance groove, 21-OD heightening bracket positioning rib. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be described in more detail below in conjunction with the drawings in the preferred embodiments of the present application. In the drawings, the same or similar reference numerals throughout represent the same or similar parts or parts with the same or similar functions. The described embodiments are part of the embodiments of the present application, not all of the embodiments. The embodiments described below with reference to the drawings are exemplary and are intended to be used to explain the present application, and should not be understood as limitations on the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0020] The embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0021] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to a fixed connection, an indirect connection via an intermediate medium, internal communication between two components, or an interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0022] In the description of this application, it should be understood that the terms "upper", "lower", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are orientations or positional relationships based on the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, rather than indicating or implying 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 this application.

[0023] In addition, the terms "comprises" and "having" and any variations thereof are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or display that comprises a series of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, product, or display.

[0024] The following will be combined Figure 1-2 , a liquid crystal module universal optical test platform involved in the embodiments of the present application is described in detail. It is worth noting that the following embodiments are only used to explain the present application and do not constitute a limitation of the present application.

[0025] Embodiment 1:

[0026] like Figure 1 The figure shows a universal optical testing platform for LCD modules, comprising a base plate 1, OD spacers 2, OC support brackets 3, and a diaphragm 7. The base plate provides support; four OD spacers are arranged around the top surface of the base plate to support a diffuser 6; the base plate within the OD spacers is used to place a light bar 4; four OC support brackets are arranged around the sides of the base plate to support an OC 8; and the diaphragm is mounted on the diffuser. The base plate, OD spacers, and OC support brackets are all CNC-machined from 20 or 30 mm thick bakelite or aluminum sheets to ensure component strength and dimensional accuracy.

[0027] In some embodiments, the OC support bracket has a countersunk groove in the middle, and the OC support bracket and the base plate are fixedly connected by screws set in the countersunk groove. The base plate has an OD heightening bracket limit groove 11 and a light bar adapter plate avoidance groove 12, wherein the light bar adapter plate avoidance groove 12 is used for installing the light bar.

[0028] The bottom of the OD support bracket is equipped with an OD support bracket positioning rib 21, which is installed in the OD support bracket's retaining groove to ensure the OD support bracket is positioned. The OD support bracket has an extension on the side away from the OC support bracket, which is secured to the base plate via screws. An inclined reflective paper 5 is installed between the OD support bracket and the base plate to reflect light.

[0029] The embodiment of the present invention takes a 75-inch medium-positioned (about 300 to 650 lights) multi-zone backlight as an example, and adopts an OD17.5mm optical solution. The test platform is split into a combination of a base plate + OD pad bracket + OC support bracket. Each part adopts a CNC processing solution. The finished product can meet the flatness of the light bar installation surface less than or equal to 0.5mm, and the OD height deviation is less than or equal to 0.3mm, maximally simulating the ideal size requirements of the optical architecture. Compared with the conventional prototype iron backplane solution, the present invention does not require the design of complex reinforcement ribs to ensure strength. At the same time, because there are basically no concave ribs on the large surface, it can also adapt to more forms of light bar. Using the test platform of the present invention to debug the light bar lens can reduce the impact of the prototype processing error and ensure the stability and accuracy of the debugging.

[0030] It should be noted that if you want to verify the optical effects of other OD values, you can do so by replacing OD heightening brackets with different heights, and the base plate can remain universal.

[0031] OC support bracket, such as Figure 2 As shown, its function is to press the diffusion plate and diaphragm on the inner surface to prevent the diffusion plate and diaphragm from loosening when the module is placed upright, and the outer surface is used to support the OC.

[0032] The above description is only a preferred embodiment of the present invention and is used to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A universal optical testing platform for liquid crystal modules, characterized in that: include: a bottom plate, the bottom plate serving as a support; OD raising brackets, four OD raising brackets are arranged around the upper surface of the base plate; Used to support the diffuser plate; The bottom plate inside the OD pad bracket is used to place the light bar; OC support brackets, four of which are arranged around the sides of the base plate and are used to support the OC; The diaphragm is arranged on the diffusion plate.

2. The universal optical testing platform for liquid crystal modules according to claim 1, characterized in that: A countersunk groove is provided in the middle of the OC support bracket, and the OC support bracket and the base plate are fixedly connected by screws arranged in the countersunk groove.

3. The universal optical testing platform for liquid crystal modules according to claim 1, characterized in that: An OD raising bracket limiting groove is provided on the bottom plate, an OD raising bracket positioning rib is provided on the bottom of the OD raising bracket, and the OD raising bracket positioning rib is arranged in the OD raising bracket limiting groove to realize the positioning of the OD raising bracket.

4. The universal optical testing platform for liquid crystal modules according to claim 1, characterized in that: The OD raising bracket is provided with an extension portion on a side away from the OC supporting bracket, and the OC supporting bracket is fixed to the base plate by screws provided on the extension portion.

5. The universal optical testing platform for liquid crystal modules according to claim 1, characterized in that: An inclined reflective paper is provided between the OD raising bracket and the bottom plate.

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