RGB array simulation device of liquid crystal display screen

Abstract

The utility model discloses an RGB (Red, Green and Blue) array simulation device of a liquid crystal display screen, which comprises a lamp box, the glass is arranged along the upper surface of the lamp box; the chromium layers are arranged on the upper surface of the glass at intervals, and the chromium layers divide the upper surface of the glass into chromium areas and chromium-free areas; a plurality of RGB array units are arranged on the chromium-free area; when the lamp box emits a light source, the chromium area prevents the light source from penetrating through, the light source in the chromium-free area penetrates through the RGB array unit located on the chromium-free area and then simulates the RGB state of the liquid crystal display screen in the lightening state, so that the moire test can be carried out after the simulated state is matched with the touch screen, the cost is reduced, and the test efficiency is improved. The development period of the product is shortened; the RGB of the simulated liquid crystal display screen is divided into an independent R array, an independent G array, an independent B array and an independent RGB combined array, and the matching test of the moire patterns of the touch screen under red, green, blue and mixed color pictures is facilitated.

Description

Technical Field

[0001] The utility model relates to an RGB device, in particular to an RGB array simulation device of a liquid crystal display screen. Background Art

[0002] As people's quality of life improves, touch screens are used more and more widely. The traditional conductive material is indium tin oxide (ITO). Considering its resistance value and storage capacity, metal grids have gradually become conductive materials to replace ITO and are used in touch screen materials, becoming the main development technology of touch screens.

[0003] Before the touch screen made of Metal Mesh is fully bonded to the LCD screen, it is necessary to study the matching of the diamond angle of the metal mesh of the touch screen and the RGB array of the LCD screen to prevent serious moiré phenomenon. For LCD screens with a long development cycle, when the LCD screen is developed, the actual LCD screen is used to match the touch screen for moiré testing, which will greatly extend the product development cycle and increase the R&D cost. If the moiré matching test shows serious moiré phenomenon, the metal mesh needs to be redesigned, which further extends the product development cycle and R&D cost, and brings unfavorable factors to the production and processing of enterprises. Utility Model Content

[0004] The utility model aims to overcome the deficiencies of the prior art and to provide an RGB array simulation device for a liquid crystal display screen, which can simulate the RGB array of a liquid crystal display screen for moiré testing with a touch screen, thereby reducing R&D costs and accelerating production efficiency.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: an RGB array simulation device for a liquid crystal display screen, comprising:

[0006] A light box, wherein the light box has a light source for emitting light;

[0007] Glass is arranged along the upper surface of the light box, and the light source emitted by the light box can pass through the glass;

[0008] A chromium layer, wherein a plurality of chromium layers are arranged at intervals on the upper surface of the glass, and the chromium layers divide the upper surface of the glass into a chromium-containing area and a chromium-free area which are arranged at intervals in sequence;

[0009] RGB array units, a plurality of the RGB array units are arranged on the chrome-free area;

[0010] When the light box emits light through the glass, the light source in the chrome area is blocked from passing through, and the light source in the chrome-free area passes through the RGB array unit located in the chrome-free area to simulate the RGB state of the LCD screen when it is lit.

[0011] Furthermore, the RGB array unit is composed of four regions: an R array region, a G array region, a B array region, and an RGB combination array region;

[0012] The R array area is composed of countless R minimum units, and the R minimum units are evenly distributed with equal spacing in the horizontal and vertical directions;

[0013] The G array area is composed of countless G minimum units, and the G minimum units are evenly distributed with equal spacing in the horizontal and vertical directions;

[0014] The B array area is composed of numerous pairs of B minimum units in the same horizontal direction, and the paired B minimum units are evenly distributed with equal spacing in the horizontal direction and the vertical direction;

[0015] The RGB combination array is composed of countless RGB basic units, and the RGB basic units are evenly distributed with equal spacing in the horizontal direction and the vertical direction. Each of the RGB basic units is arranged by a plurality of R array areas, a plurality of G array areas, and a plurality of B array areas.

[0016] Furthermore, the glass is aluminum silicon or sodium calcium with a thickness of 1 mm to 3 mm.

[0017] Furthermore, a coating layer is provided on the upper surface of the glass.

[0018] Furthermore, the light transmittance of the glass is greater than 90%.

[0019] Furthermore, the light source is composed of a plurality of fluorescent lamps arranged in parallel in a light box.

[0020] Due to the application of the above technical solution, the utility model has the following advantages compared with the prior art:

[0021] The RGB array simulation device of the liquid crystal display screen of the utility model has the advantages that when the light box emits light, the chrome area prevents the light source from passing through, and the light source at the chrome-free area passes through the RGB array located on the chrome-free area to simulate the RGB state of the liquid crystal display screen in the lighting state, so that the moiré pattern test can be performed after the simulated RGB state of the liquid crystal display screen is matched with the touch screen, thereby reducing costs and shortening the product development cycle.

[0022] Secondly, dividing the RGB of the simulated LCD screen into separate R array, G array, B array and RGB combination array is to highlight the distribution of RGB arrays under the main red, green, blue and mixed color images, which is conducive to the matching test of the touch screen moiré under red, green, blue and mixed color images, and can more accurately and effectively evaluate whether there is moiré phenomenon on the touch screen and LCD screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The technical solution of the utility model is further described below in conjunction with the accompanying drawings:

[0024] Figure 1 This is a schematic diagram of the structure of an embodiment of the utility model;

[0025] Figure 2 for Figure 1 A partial top view of

[0026] Figure 3 This is a schematic diagram of the structure of the RGB array in one embodiment of the utility model;

[0027] Figure 4 It is a schematic diagram of the process of preparing the simulation device of the utility model;

[0028] Among them: light box 1, glass 2, chrome layer 3, RGB array unit 4, photoresist 6, fluorescent lamp 11, chrome area 30, chrome-free area 31, R minimum unit 40, G minimum unit 41, B minimum unit 42, RGB basic unit 43. DETAILED DESCRIPTION

[0029] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0030] The utility model provides an RGB array simulation device for a liquid crystal display screen, so as to solve the problem in the prior art that a real liquid crystal display screen needs to be used to match a touch screen for moiré testing, which will greatly prolong the product development cycle and increase the research and development cost.

[0031] Each screen of the LCD screen is presented by the RGB array composed of RGB basic units. The RGB basic unit is composed of 1 R minimum unit, 1 G minimum unit, and 2 B minimum units. Countless RGB basic units are arranged in an array to form an RGB array. Different LCD screens have different RGB array structures, showing that the length and width of the R, G, B minimum units and the relative positions of the R, G, B minimum units are all different.

[0032] For ease of understanding, the specific process in the embodiments of the present application is described below. Figures 1 to 3 In the embodiment of the present application, an RGB array simulation device of a liquid crystal display screen includes a light box 1, a glass 2, a chrome layer 3 and an RGB array unit 4; the light box 1 has a light source; the glass 2 is arranged along the upper surface of the light box 1, and the light source can irradiate upward through the glass 2; a plurality of chrome layers 3 are arranged at intervals on the upper surface of the glass 2, and the chrome layers 3 divide the upper surface of the glass 2 into chrome areas 30 and chrome-free areas 31 arranged at intervals; a plurality of the RGB array units 4 are arranged on the chrome-free area 31.

[0033] According to the RGB array simulation device for a liquid crystal display screen of the utility model, when a light source is emitted from a light box 1 through a glass 2, the chrome area 30 prevents the light source from passing through, and the light source at the chrome-free area 31 passes through an RGB array unit 4 located on the chrome-free area to simulate the RGB state of the liquid crystal display screen when it is lit, and then the moiré test is performed after the RGB state of the simulated liquid crystal display screen is matched with the touch screen, thereby reducing costs, shortening the product development cycle, and improving production efficiency.

[0034] based on Figures 2 to 3 In this embodiment, the plurality of RGB array units 4 are formed into a chrome pattern with a certain pattern by a yellow light process or a laser process on the entire chrome layer, and are constructed by a chrome area 30 and a chrome-free area 31. The chrome area 30 is a glass surface with a certain chrome layer 3, and the chrome-free area 31 is a glass surface without a chrome layer 3. Therefore, when the light box 1 generates light through the glass, the chrome-free area 31 is illuminated, while the chrome area 30 cannot be illuminated, thereby simulating the RGB state of the liquid crystal display.

[0035] Specifically, the RGB array unit 4 is composed of an R array area, a G array area, a B array area, and an RGB combination array area. The length and width dimensions of the R, G, and B minimum units are consistent with the above dimensions, wherein the R array area is composed of countless R minimum units 40, and the R minimum units 40 and the R minimum units 40 are evenly distributed at an equal interval of 0.1144 mm in the horizontal direction and evenly distributed at an equal interval of 0.1144 mm in the vertical direction.

[0036] The G array region is composed of numerous G minimum units 41, and the G minimum units 41 are evenly distributed with an equal spacing of 0.1144 mm in the horizontal direction and evenly distributed with an equal spacing of 0.1144 mm in the vertical direction.

[0037] The B array area is composed of countless pairs of B minimum units 42. The paired B minimum units are in the same horizontal direction, with a horizontal distance of 0.015 mm between them. The paired B minimum units are evenly distributed with an equal spacing of 0.1144 mm in the horizontal direction and evenly distributed with an equal spacing of 0.1144 mm in the vertical direction.

[0038] The RGB combination array is composed of numerous RGB basic units 43, and the RGB basic units are evenly distributed with an equal spacing of 0.1144 mm in the horizontal direction and evenly distributed with an equal spacing of 0.1144 mm in the vertical direction.

[0039] In addition, the spacing distances between the above-mentioned R array area, G array area, B array area, and RGB combination array area are also adjusted according to different products to meet the testing needs of different products.

[0040] In this embodiment, the RGB of the simulated liquid crystal display screen is divided into separate R arrays, G arrays, B arrays, and RGB combination arrays in order to highlight the distribution of the RGB arrays under the main red, green, blue, and mixed color images, which is beneficial to the matching test of the touch screen moiré under the red, green, blue, and mixed color images, and can more accurately and effectively evaluate whether the touch screen and the liquid crystal display screen have moiré phenomena.

[0041] based on Figure 1 Furthermore, the light source in the light box 1 is composed of multiple fluorescent lamps 11 arranged in parallel in the light box. The fluorescent lamps 11 remain parallel to the horizontal surface and can be located at any position in the vertical direction of the light box 1. The fluorescent lamp light source is a D65 light source with a light intensity of 800Lux to 1200Lux.

[0042] Furthermore, the glass 2 in this embodiment is aluminum silicon or sodium calcium with a thickness of 1 mm to 3 mm. The length and width of the glass 2 can be consistent with the length and width of the light box 1, or can be smaller than the length and width of the light box 1, and can be adjusted according to actual needs.

[0043] Secondly, a coating layer may be coated on the upper surface of the glass 2 to increase its service life.

[0044] Again, the light transmittance of the glass 2 is greater than 90%, so that the light source in the light box 1 can pass through the glass 2 to irradiate the RGB array unit 4; of course, the light transmittance can be adjusted according to actual conditions, but generally it needs to be greater than 90% to meet actual usage requirements.

[0045] The chromium layer 3 is a whole-surface chromium layer with a thickness of 1um to 5um formed on the surface of the glass 2 by processes such as evaporation or magnetron sputtering. There is good adhesion between the chromium layer 3 and the glass 2. At this time, the light source emitted by the light box 1 cannot pass through the chromium layer 3, and the transmittance on the glass with the chromium layer 3 is 0%.

[0046] The specific working process is as follows: when the fluorescent lamp 11 in the light box 1 is turned on, the D65 light source cannot pass through the chrome area 30, and the transmittance of the D65 light source in the chrome area 30 is 0%; for the chrome-free area 31, the D65 light source can directly pass through the chrome-free area 31 on the glass 2, and the transmittance of the D65 light source in this area is ≥90%. After the light sources transmitted through the chrome-free area 31 are integrated together, an array structure diagram consistent with the RGB of the LCD screen when it is lit can be formed, so that the RGB state of the LCD screen when it is lit can be simulated. In actual testing, when there is no physical LCD screen, the RGB array device simulated as above can be used instead of the LCD screen to match the moiré phenomenon of the touch screen, thereby shortening the product development cycle, reducing product R&D costs, and better meeting actual usage needs.

[0047] based on Figure 4 The utility model also discloses the preparation process of the RGB simulation device of the liquid crystal display screen:

[0048] S1, coating a chromium layer 3 with a thickness of 1um to 5um on the surface of a 1mm to 3mm glass 2 by magnetron sputtering or vacuum evaporation;

[0049] S2, coating a layer of photoresist 6 with a thickness of 1 um to 3 um on the surface of the chromium layer 3, and baking at 90° C. to 120° C. for 5 min to 15 min;

[0050] S31, using yellow light process to prepare RGB array, exposing under designed mask, exposure energy 80mj / cm2~300j / cm2, wherein the pattern of mask is consistent with the chromium pattern to be prepared, so that the photoresist area that does not need to be retained, that is, the RGB array area, is exposed, and the photoresist area that needs to be retained, that is, the chromium area, is not exposed; developing in an alkaline mixed solution such as tetramethylammonium hydroxide with a content of 10%~20%, so that the photoresist in the photoresist area that does not need to be retained is developed;

[0051] After washing with water and air drying, etching is performed in a mixed acid solution of 30% to 40% hydrochloric acid or a mixed acid solution of 90% to 99% chromic acid and 1% to 10% sulfuric acid, so that the chromium in the photoresist area that does not need to be retained is etched away, while the chromium in the photoresist area that needs to be retained is left;

[0052] Finally, a film stripping treatment is performed in an inorganic alkaline solution with a content of 20% to 30% to remove the photoresist retained during the etching process, so that a layer of chromium-free area with RGB array units and a chromium-containing area without RGB array units can be formed on the surface of the glass 2;

[0053] S32. Use laser technology to prepare RGB arrays. Import the designed RGB array structure into the high-precision cold laser equipment software. Use cold laser processing technology to laser out the chrome-free area and retain the chrome area. In this way, the RGB array can also be prepared. This method is relatively simple. The laser head generally needs to meet 3um~10um, and in special cases, it needs to meet 1um~3um. At the same time, the laser power and speed need to be adjusted during lasering to avoid uneven layers on the chrome side, which affects the display effect of the RGB array.

[0054] S4. Then, assemble the glass with the RGB array unit on the light box, thereby assembling the simulated RGB device of the liquid crystal display screen.

[0055] As described above, the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A RGB array simulation device for a liquid crystal display, characterized in that: include: A light box, wherein the light box has a light source for emitting light; Glass is arranged along the upper surface of the light box, and the light source emitted by the light box can pass through the glass; A chromium layer, wherein a plurality of chromium layers are arranged at intervals on the upper surface of the glass, and the chromium layers divide the upper surface of the glass into a chromium-containing area and a chromium-free area which are arranged at intervals in sequence; RGB array units, a plurality of the RGB array units are arranged on the chrome-free area; When the light box emits light through the glass, the light source in the chrome area is blocked from passing through, and the light source in the chrome-free area passes through the RGB array unit located in the chrome-free area to simulate the RGB state of the LCD screen when it is lit.

2. The RGB array simulation device for a liquid crystal display screen as claimed in claim 1, characterized in that: The RGB array unit is composed of four areas: an R array area, a G array area, a B array area, and an RGB combination array area; The R array area is composed of countless R minimum units, and the R minimum units are evenly distributed with equal spacing in the horizontal and vertical directions; The G array area is composed of countless G minimum units, and the G minimum units are evenly distributed with equal spacing in the horizontal and vertical directions; The B array area is composed of numerous pairs of B minimum units in the same horizontal direction, and the paired B minimum units are evenly distributed with equal spacing in the horizontal direction and the vertical direction; The RGB combination array is composed of countless RGB basic units, and the RGB basic units are evenly distributed with equal spacing in the horizontal direction and the vertical direction. Each of the RGB basic units is arranged by a plurality of R array areas, a plurality of G array areas, and a plurality of B array areas.

3. The RGB array simulation device for a liquid crystal display screen as claimed in claim 1, characterized in that: The glass is aluminum silicon or sodium calcium with a thickness of 1 mm to 3 mm.

4. The RGB array simulation device for a liquid crystal display screen as claimed in claim 1, characterized in that: The upper surface of the glass is also provided with a coating layer.

5. The RGB array simulation device for a liquid crystal display screen as claimed in claim 1, characterized in that: The light transmittance of the glass is greater than 90%.

6. The RGB array simulation device for a liquid crystal display screen as claimed in claim 1, characterized in that: The light source is composed of a plurality of fluorescent lamps arranged in parallel in a light box.

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