A display screen module assembly

Abstract

A display screen module assembly of the present disclosure comprises, in sequence, an anti-reflection filter, a display screen, a screen heater, and an optical film group; the optical film group comprises, in sequence, a first glass, a DBEF film, a BEF film, a diffusion film, a first night vision film, a second glass, and a second night vision film. The optical module improves the backlight utilization rate. Due to the reflection of the outer surface of the display screen, the contrast of the picture will be greatly reduced, which directly affects the display effect. In order to meet the needs of surface anti-reflection and electromagnetic shielding, an anti-reflection filter is added. The screen heater is used to heat the display screen at low temperature.

Description

Technical Field

[0001] This disclosure relates to the field of display technology, and more specifically, to a display module assembly. Background Technology

[0002] With active-matrix LCD panels dominating the market today, it's safe to say that flat-panel displays will virtually rule all display fields: whether in civilian or specialized modern display devices; whether applied to micro-displays, large-screen displays, or digital televisions. Today, active-matrix LCD panels of various sizes perfectly meet the needs of civilian, military, and aerospace companies. These displays are extremely robust, able to withstand various impact loads, and are moisture-proof and UV-resistant.

[0003] KORRY's existing display modules use a diffuser plate on the side facing the backlight. Above the diffuser plate is a BEF brightness enhancement film, which is laminated onto white glass. Above the BEF film is a night vision film, and above that is another diffuser plate. The side of the diffuser plate facing the backlight has a scattering layer, and the other side has a prism microstructure. KORRY's optical film module's night vision compatible filter is placed on top of the entire module. Based on experience, this top-mounted method improves display brightness but can cause a bluish tint when viewed at an angle. Summary of the Invention

[0004] The present disclosure is to provide a novel display module assembly.

[0005] To achieve the above objectives, the technical solution adopted in this disclosure is as follows:

[0006] A display module assembly includes an anti-reflection filter, a display screen, a screen heater, and an optical film group arranged in sequence.

[0007] The optical film assembly includes a first glass, a DBEF film, a BEF film, a diffusion film, a first night vision film, a second glass, and a second night vision film, which are stacked in sequence.

[0008] Optionally, an LED backlight panel is also installed below the optical film assembly, and the LED backlight panel, display screen, and screen heater are connected to the control module.

[0009] Optionally, the LED backlight panel has colored LEDs and white LEDs, and the optical film group has an upper light guide plate and a lower light guide plate below it. The upper light guide plate corresponds to the position of the colored LEDs, and the lower light guide plate corresponds to the position of the white LEDs.

[0010] Optionally, the lower light guide plate also has a reflective film.

[0011] Optionally, the antireflective filter includes a glass substrate, one side of which has an antireflective film and the other side of which has an ITO film.

[0012] Optionally, the ITO film side of the glass substrate is bonded to the display screen using optical adhesive.

[0013] Optionally, the ITO film side of the glass substrate also has a composite thermophysical adhesive.

[0014] Optionally, the screen heater includes a heater substrate and a heating layer stacked together, and conductive silver paste is disposed on both sides of the heating layer.

[0015] Optionally, the heater substrate is float glass, and the heating layer is an ITO layer.

[0016] Optionally, the second night vision film is bonded to the screen heater.

[0017] The optical film assembly in the display module component disclosed herein includes a first glass, a DBEF film, a BEF film, a diffusion film, a first night vision film, a second glass, and a second night vision film stacked sequentially. This optical film assembly improves backlight utilization. Due to reflections on the outer surface of the display screen, the contrast of the image will be greatly reduced, directly affecting the display effect. To meet the needs of surface anti-reflection and electromagnetic shielding, an anti-reflection filter is added. A screen heater is used to heat the display screen at low temperatures. When a diffusion film is used above the night vision film, when viewing at an angle, not only the light incident at an angle into the filter enters the viewing angle, but also the vertically incident light is scattered into the angled viewing angle by the diffusion film. After mixing with the angled incident light, the bluish tint is reduced. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this disclosure or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of the optical film assembly in use in this disclosure.

[0020] Figure 2 This is a schematic diagram of the structure of the display module component disclosed herein.

[0021] Figure 3 This is a schematic diagram of the optical film assembly in this disclosure. Detailed Implementation

[0022] The preferred embodiments of this disclosure will now be described in detail with reference to the accompanying drawings, so that the advantages and features of this disclosure can be more easily understood by those skilled in the art, thereby providing a clearer and more definite definition of the scope of protection of this disclosure.

[0023] KORRY's optical film module night vision compatible filter is placed at the very top of the entire film module. The method of using the night vision compatible filter at the top can improve the display brightness, but it will cause the color to appear bluish when viewed at an angle.

[0024] To solve this technical problem, see [link / reference] Figure 2 As shown, this disclosure provides a display module assembly, including an anti-reflection filter 1, a display screen 2, a screen heater 3, and an optical film group 4 arranged in sequence.

[0025] See Figure 3 As shown, the optical film assembly 4 includes a first glass 41, a DBEF film 42, a BEF film 43, a diffusion film 44, a first night vision film 45, a second glass 46, and a second night vision film 47, which are stacked sequentially. The sides of the optical film assembly are bonded with adhesive tape 48, which is used for reinforcement to prevent common problems such as wrinkling and screen abrasion in the backlight module under high temperature and vibration conditions. The BEF film 43 is laminated onto the white glass. When the diffusion film 44 is used above the night vision film, when viewed at an angle, not only the light incident at an angle into the filter enters the viewing angle, but also the vertically incident light is scattered into the angled viewing angle by the diffusion film. After mixing with the angled incident light, the bluish color is reduced.

[0026] An LED backlight panel 7 is also installed below the optical film group 4. The LED backlight panel 7, the display screen 2, and the screen heater 4 are connected to the control module.

[0027] Optionally, the LED backlight panel 7 has colored LEDs 71 and white LEDs 72. An upper light guide plate 5 and a lower light guide plate 6 are located between the LED backlight panel 7 and the optical film group 4. The upper light guide plate 5 corresponds to the colored LEDs 71, and the lower light guide plate 6 corresponds to the white LEDs 72. This application makes two light guide plates instead of the conventional solution, i.e., by isolating the white LEDs 72 and colored LEDs 71 from each other, thus avoiding infrared leakage. The upper light guide plate 5 and the lower light guide plate 6 are sealed using an injection-type wet-cast optical silicone sealant method, ensuring a tight bond between the two light guide plates. The thickness of the optical silicone sealant is controlled at 0.6 mm. The lower light guide plate also has a reflective film to achieve light uniformity. The colored LEDs 71 are activated in night vision mode, and the white LEDs 72 are activated in white light mode.

[0028] In airborne environments, LCDs are frequently exposed to intense sunlight up to 100,000 Lux. Due to reflections from the outer surface of the display screen 2, the contrast ratio of the image is greatly reduced, directly affecting the display effect. To meet the requirements of surface anti-reflection and electromagnetic shielding, an anti-reflection filter 1 is added.

[0029] Optionally, the antireflective filter 1 includes a glass substrate, one side of which has an antireflective film, and the other side of which has an ITO film. The glass substrate thickness can be 1.1 mm; reflectivity: average <1.0%; transmittance: ≥90%; electromagnetic shielding effectiveness: 20-30 dB (1 MHZ-1 GHZ); to improve light transmittance, reduce reflection between the substrate and the liquid crystal screen, and enhance adhesion, optical adhesive tightly bonds the antireflective filter 1 to the display screen 2; the ITO film side of the glass substrate is bonded to the display screen by optical adhesive, and the ITO film side of the glass substrate also has a composite thermoplastic adhesive.

[0030] The screen heater 3 includes a heater substrate and a heating layer stacked together, with conductive silver paste applied to both sides of the heating layer. When the display screen 2 is at a low temperature, current passes through the heating layer of the heater 3, generating Joule heat that is transferred to the liquid crystal inside the display screen glass, enabling it to function normally.

[0031] Preferably, the heater substrate is float glass, the heating layer is an ITO layer, the surface resistance of the heating layer can be 9.5-12 ohms, the final resistance can be 9-11.5 ohms, and the low-temperature heating power consumption is 90W; the float glass thickness is 1.1mm, and the visible light transmittance is greater than 80%. The glass surface coated with the ITO layer is the bonding surface. To eliminate the yellow spot phenomenon, a composite thermal adhesive is used on the bonding surface of the anti-reflection filter 1 and the display screen 2, and optical adhesive is used for bonding. The thickness of the optical adhesive layer is 0.2mm.

[0032] Considering the reliability of the LCD screen assembly, the screen heater 3 is surface-bonded, with the non-conductive surface of the heating layer of the screen heater 3 being the bonding surface, bonded with optical adhesive, and the adhesive layer thickness is 0.3mm.

[0033] Optionally, the second night vision film 47 is bonded to the screen heater 3.

[0034] Although embodiments of the present disclosure have been described in conjunction with the accompanying drawings, the patent owner may make various modifications or alterations within the scope of the appended claims, as long as they do not exceed the scope of protection described in the claims of the present disclosure, they shall be within the scope of protection of the present disclosure.

Claims

1. A display module assembly, characterized in that, It includes an anti-reflection filter, a display screen, a screen heater, and an optical film assembly stacked in sequence; The optical film assembly includes a first glass, a DBEF film, a BEF film, a diffusion film, a first night vision film, a second glass, and a second night vision film, which are stacked in sequence.

2. The display module assembly according to claim 1, characterized in that: An LED backlight panel is also installed below the optical film assembly. The LED backlight panel, display screen, and screen heater are connected to the control module.

3. The display module assembly according to claim 2, characterized in that: The LED backlight panel has colored LEDs and white LEDs. Below the optical film group are an upper light guide plate and a lower light guide plate. The upper light guide plate corresponds to the position of the colored LEDs, and the lower light guide plate corresponds to the position of the white LEDs.

4. The display module assembly according to claim 3, characterized in that: The lower light guide plate also has a reflective film.

5. The display module assembly according to claim 1, characterized in that: The antireflective filter includes a glass substrate, one side of which has an antireflective film and the other side of which has an ITO film.

6. The display module assembly according to claim 5, characterized in that: The ITO film side of the glass substrate is bonded to the display screen with optical adhesive.

7. The display module assembly according to claim 5, characterized in that: The glass substrate also has a composite thermophysical adhesive on one side of the ITO film.

8. The display module assembly according to claim 1, characterized in that: The screen heater includes a heater substrate and a heating layer stacked together, and conductive silver paste is disposed on both sides of the heating layer.

9. The display module assembly according to claim 8, characterized in that: The heater substrate is float glass, and the heating layer is an ITO layer.

10. The display module assembly according to claim 1, characterized in that: The second night vision film is bonded to the screen heater.

Images