Production process for improving optical yield of liquid crystal module

Abstract

The invention discloses a production process for improving the optical yield of a liquid crystal module. According to the technical scheme, the production process is characterized by comprising the following steps that a liquid crystal screen which is not provided with a backlight source and is subjected to grade inspection is sent to C2 inspection; during C2 inspection, the transmittance of the liquid crystal screen is measured, the transmittance is subjected to rank distinguishing, and Lot marshalling is carried out after measurement; measuring the brightness of the backlight source, carrying out brightness rank distinguishing, and then carrying out Lot marshalling; when Lot marshalling is carried out, the backlight brightness rank is matched with the liquid crystal screen light transmittance rank, marshalling is carried out, and backlight assembly is carried out after marshalling; in a traditional liquid crystal module production process, the method aims at VRamp; according to the liquid crystal module of the AR product, the procedures of measuring, grouping and matching optical numerical values of the liquid crystal screen single body, the backlight source single body and the liquid crystal module are added, so that optical discretization of the liquid crystal module product can be managed to the maximum extent, the occurrence rate of optical badness is reduced, the product quality is improved, and great benefits are expected to be brought.

Description

Technical Field

[0001] The present invention relates to the field of liquid crystal panels, and in particular to a production process for improving the optical yield of a liquid crystal module. Background Art

[0002] In the usual mass production process of liquid crystal module products, the optical values ​​of the liquid crystal panel monomers and the backlight source monomers are not matched and grouped, and they are directly assembled randomly.

[0003] However, there are some problems, such as:

[0004] ① The optical specifications of the LCD panel monomer and the backlight monomer have tolerances. After random assembly, the optical value discrete range of the assembled LCD module is large.

[0005] ② If the optical values ​​of the LCD panel monomer and the backlight monomer assembled into the LCD module are close to the tolerance limit, the optical values ​​of the LCD module may exceed the specification, resulting in defects and scrap.

[0006] ③ For assembled LCD module products, if they are not differentiated and paired before packing and shipment, it may lead to management difficulties on the user side. Summary of the invention

[0007] In view of the problems mentioned in the background technology, an object of the present invention is to provide a production process for improving the optical yield of a liquid crystal module to solve the problems mentioned in the background technology.

[0008] The above technical objectives of the present invention are achieved through the following technical solutions:

[0009] A production process for improving the optical yield of a liquid crystal module comprises the following steps:

[0010] Send the LCD screens that have passed the backlight-free and quality inspection to C2 for inspection;

[0011] During C2 inspection, the transmittance of the LCD screen is measured, the transmittance ranks are distinguished, and lot groups are performed after the measurement;

[0012] The brightness of the backlight source is measured, the brightness ranks are distinguished, and then the lot groups are also performed;

[0013] When grouping in Lot, the backlight source brightness rank and LCD screen transmittance rank are matched and grouped, and then the backlight source is assembled after grouping;

[0014] After the backlight is assembled, the backlight and LCD screen are assembled according to the Lot grouping, and D1 inspection is performed after assembly;

[0015] During the D1 inspection, the optical data of the LCD module is measured, and the optical data of the LCD module and the brightness rank and contrast rank are written into the IC, and then the N inspection is performed;

[0016] N check after QR code label;

[0017] During the N inspection, read the brightness rank and contrast rank of the LCD module in the IC, bind them with the serial number of the LCD module, print them on the QR code label, and stick the printed label on the LCD module;

[0018] After the label is attached to the liquid crystal module, pairing is performed. Pairing is to read the QR label, pair modules with the same optical rank, and store them in pairs on the tray.

[0019] Preferably, the modules with the same optical rank are paired up in pairs, stored in pairs on a pallet, and then packaged and shipped.

[0020] Preferably, the quality inspection includes size inspection, appearance inspection, frame inspection and film coating inspection.

[0021] Preferably, during the appearance inspection: check that the screen is free of debris, black and white, lines and bubbles; during the frame inspection: check that the screen is free of deformation, discoloration, folds, twists, breaks, burrs, fingerprints and oxidation discoloration; during the coating inspection: check that the reflective film, shading film and brightening film of the screen are free of deformation and damage.

[0022] Preferably, when measuring the transmittance of the liquid crystal screen, a display screen transmittance tester is used for testing, and when testing the transmittance, the saturation and color purity are tested.

[0023] Preferably, while the optical data and brightness rank and contrast rank of the liquid crystal module are written into the IC, the data is uploaded to a cloud storage device for storage.

[0024] In summary, the present invention mainly has the following beneficial effects:

[0025] 1. In the traditional liquid crystal module production process, the present invention adds the process of measuring, grouping and matching the optical values ​​of the liquid crystal screen monomer, the backlight monomer and the liquid crystal module for the liquid crystal module of VR & AR products, so as to manage the optical discreteness of the liquid crystal module product to the maximum extent and reduce the incidence of optical defects, thereby improving product quality and expected to bring greater benefits;

[0026] 2. For LCD screens, C2 inspection is added after the normal inspection to read the optical value of the LCD screen monomer and rank management is distinguished according to the optical value;

[0027] 3. For backlight sources, an additional optical inspection is performed after the normal inspection to read the optical values ​​of the backlight units and rank them according to the optical values;

[0028] Fourth, group the backlight units and LCD units according to their respective optical ranks and certain rules, and assemble them according to the groups, so as to converge the optical numerical dispersion of the LCD module products and reduce the occurrence of optical defects;

[0029] 5. For the assembled LCD modules, the optical data is read through D1 inspection, and the ranks are distinguished and managed according to the optical values. Before shipment, they are paired and packed according to the optical ranks to facilitate the management and use of the client. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a flow chart of the prior art;

[0031] Figure 2 It is a flow chart of the present invention. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] refer to Figure 1 and Figure 2 , a production process for improving the optical yield of a liquid crystal module, comprising the following steps:

[0034] Send the LCD screens that have passed the backlight-free and quality inspection to C2 for inspection;

[0035] During C2 inspection, the transmittance of the LCD screen is measured, the transmittance ranks are distinguished, and lot groups are performed after the measurement;

[0036] The brightness of the backlight source is measured, the brightness ranks are distinguished, and then the lot groups are also performed;

[0037] When grouping in Lot, the backlight source brightness rank and LCD screen transmittance rank are matched and grouped, and then the backlight source is assembled after grouping;

[0038] After the backlight is assembled, the backlight and LCD screen are assembled according to the Lot grouping, and D1 inspection is performed after assembly;

[0039] During the D1 inspection, the optical data of the LCD module is measured, and the optical data of the LCD module and the brightness rank and contrast rank are written into the IC, and then the N inspection is performed;

[0040] N check after QR code label;

[0041] During the N inspection, read the brightness rank and contrast rank of the LCD module in the IC, bind them with the serial number of the LCD module, print them on the QR code label, and stick the printed label on the LCD module;

[0042] After the label is attached to the liquid crystal module, pairing is performed. Pairing is to read the QR label, pair modules with the same optical rank, and store them in pairs on the tray.

[0043] The modules with the same optical rank are paired up in pairs, stored in pairs on a pallet, and then packaged and shipped.

[0044] Among them, the quality inspection includes size inspection, appearance inspection, frame inspection and coating inspection.

[0045] Among them, during the appearance inspection: check that the screen is free of debris, black and white, lines and bubbles; during the frame inspection: check that the screen is not deformed, discolored, folded, twisted, broken, burred, fingerprinted and oxidized; during the coating inspection: check that the reflective film, shading film and brightening film of the screen are free of deformation and damage.

[0046] Wherein, when measuring the transmittance of the liquid crystal screen, a display screen transmittance tester is used for testing, and when testing the transmittance, the saturation and color purity are tested.

[0047] Wherein, while the optical data, brightness rank and contrast rank of the liquid crystal module are written into the IC, the data are uploaded to the cloud storage for storage.

[0048] Among them: In the traditional liquid crystal module production process, the present invention adds the process of measuring, grouping and matching the optical values ​​of the liquid crystal screen monomer, the backlight source monomer and the liquid crystal module for the liquid crystal module of VR&AR products, so that the optical discreteness of the liquid crystal module product can be managed to the maximum extent and the incidence of optical defects can be reduced, thereby improving product quality and expected to bring greater benefits; for the liquid crystal screen, a C2 inspection is added after the usual inspection to read the optical value of the liquid crystal screen monomer, and the rank management is distinguished according to the optical value. For the backlight source, an optical inspection is added after the usual inspection to read the optical value of the backlight source monomer, and the rank management is distinguished according to the optical value. The backlight source monomer and the liquid crystal screen monomer are grouped according to their respective optical ranks and certain rules, and the assembly operation is performed according to the grouping, so as to converge the optical value discreteness of the liquid crystal module product and reduce the occurrence of optical defects. For the assembled liquid crystal module, the optical data is read through the D1 inspection, and the rank is distinguished according to the optical value for management. Before shipment, the optical ranks are paired and packed according to the optical ranks, which is convenient for the client's management and use.

[0049] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A production process for improving the optical yield of a liquid crystal module, characterized in that: The following steps are involved: Send the LCD screens that have passed the backlight-free and quality inspection to C2 for inspection; During C2 inspection, the transmittance of the LCD screen is measured, the transmittance ranks are distinguished, and lot groups are performed after the measurement; The brightness of the backlight source is measured, the brightness ranks are distinguished, and then the lot groups are also performed; When grouping in Lot, the backlight source brightness rank and LCD screen transmittance rank are matched and grouped, and then the backlight source is assembled after grouping; After the backlight is assembled, the backlight and LCD screen are assembled according to the Lot grouping, and D1 inspection is performed after assembly; During the D1 inspection, the optical data of the LCD module is measured, and the optical data of the LCD module and the brightness rank and contrast rank are written into the IC, and then the N inspection is performed; N check after QR code label; During the N inspection, read the brightness rank and contrast rank of the LCD module in the IC, bind them with the serial number of the LCD module, print them on the QR code label, and stick the printed label on the LCD module; After the label is attached to the liquid crystal module, pairing is performed. Pairing is to read the QR label, pair modules with the same optical rank, and store them in pairs on the tray.

2. A production process for improving optical yield of a liquid crystal module according to claim 1, characterized in that: The modules with the same optical rank are paired up in pairs, stored in pairs on a pallet, and then packaged and shipped.

3. The production process for improving optical yield of a liquid crystal module according to claim 1, characterized in that: The quality inspection includes size inspection, appearance inspection, frame inspection and film coating inspection.

4. The production process for improving optical yield of a liquid crystal module according to claim 1, characterized in that: During the appearance inspection: check that the screen is free of debris, black and white, lines and bubbles. During the frame inspection: check that the screen is free of deformation, discoloration, folds, twists, breaks, burrs, fingerprints and oxidation discoloration. During the coating inspection: check that the reflective film, shading film and brightening film of the screen are free of deformation and damage.

5. The production process for improving optical yield of a liquid crystal module according to claim 1, characterized in that: When measuring the transmittance of the liquid crystal screen, a display screen transmittance tester is used for testing. When testing the transmittance, the saturation and color purity are tested.

6. The production process for improving optical yield of a liquid crystal module according to claim 1, characterized in that: While writing the optical data, brightness rank and contrast rank of the liquid crystal module into the IC, the data is uploaded to the cloud storage for storage.

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