CN214335425U

CN214335425U - Prevent leading light source display module assembly of blue light

Info

Publication number: CN214335425U
Application number: CN202120640263.4U
Authority: CN
Inventors: 覃威; 范明生
Original assignee: Shenzhen AV Display Co Ltd
Current assignee: Shenzhen AV Display Co Ltd
Priority date: 2021-03-29
Filing date: 2021-03-29
Publication date: 2021-10-01
Anticipated expiration: 2031-03-29

Abstract

The utility model provides a blue-light-proof front-mounted light source display module, which comprises a touch panel, a light guide plate and a reflective TFT display panel which are arranged in a stacking way; be close to at the light guide plate be provided with the optics site that is used for refracting light on touch panel's the terminal surface, optical site coats one deck blue light barrier film, and vacuum evaporation has plated the AG membrane on touch panel keeps away from the up end of light guide plate, and vacuum evaporation has plated the AR membrane on touch panel is close to the lower terminal surface of light guide plate. The front light source display module provided by the utility model can filter the blue light scattered by the front light source light-diffusing plate, reduce the stimulation of the screen to eyes and protect the eyesight; meanwhile, the AG film and the AR film are evaporated on the touch panel, so that specular reflection is greatly reduced, dilution of natural light and front light source light to reflected content light is reduced, and color gamut and contrast are improved.

Description

Prevent leading light source display module assembly of blue light

Technical Field

The utility model belongs to the technical field of the display screen, a leading light source display module assembly with prevent blue light function is related to.

Background

VDT syndrome is another disorder that follows urban modern diseases such as "iPad hand" in recent years. The reason is that the eyes and the body are uncomfortable, and the discomfort of the eyes is particularly serious when the display device is faced for a long time. This is all due to the invisible killer-high energy blue light in the screen. High-energy blue light penetrates through the cornea and directly reaches the retina, so that the retina is damaged; is one of the important causes caused by macular degeneration, eye fatigue, dry eye disease, etc.

The total reflection type liquid crystal display is a screen which displays by a reflection light source, after the external environment light reflects the environment light by a reflection layer of the LCD, the black and white display is realized by penetrating through a polaroid or being absorbed by the polaroid, if the external environment light does not exist or is very weak, a front light source is required to be arranged on the surface of the display for supplementing light to achieve a clear display effect. The prior art of the light guide plate cannot achieve the effect that light rays are all downward, so that the front light source also has obvious defects: the high-energy blue light emitted by the LED can not be filtered and reflected by the LCD and the polaroid, and can be directly emitted into the eyeball to cause damage such as visual fatigue, blurred vision or myopia deepening to a user.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that will solve is: the utility model provides a leading light source display module assembly, through filtering the blue light that leading light source display module assembly scattering goes out, alleviate the injury to human eyes.

In order to solve the technical problem, the utility model discloses a technical scheme be:

the utility model provides a prevent leading light source display module assembly of blue light, leading light source display module assembly includes stacked touch panel, light guide plate, reflective TFT display panel;

the side face, close to the touch panel, of the light guide plate is provided with optical dots for refracting light, the optical dots are arranged in an array mode, and the optical dots are covered with blue light barrier films.

Preferably, the light guide plate is a side light-entering light guide plate, and a light emitter is mounted on a side surface of the light guide plate.

Preferably, the luminous body is an LED lamp bead.

Preferably, an AG film is vacuum-evaporated on a side of the touch panel away from the light guide plate.

Preferably, an AR film is vacuum-evaporated on a side of the touch panel close to the light guide plate.

Preferably, the touch panel, the light guide plate and the reflective TFT display panel are bonded by using an optical adhesive.

Preferably, the optical cement includes an optical tape and an optically transparent resin.

Compared with the prior art, the beneficial effects of the utility model reside in that: the utility model provides a front light source display module, cover a blue light barrier film on the optics site of light guide plate, can filter the blue light that front light source diffusion board scattered goes out, alleviate the stimulation of screen to eyes, protect eyesight; meanwhile, an AG anti-glare protective film and AR coated antireflection glass are evaporated on the touch panel, so that the specular reflection is greatly reduced, the dilution of reflected content light by natural light and front light source light is reduced, and the color gamut and the contrast are improved.

Drawings

The following detailed description of the specific structure of the present invention with reference to the accompanying drawings

Fig. 1 is a schematic structural view of a front light source display module according to the present invention;

FIG. 2 is a schematic view of a top view structure of the light guide plate of the present invention;

FIG. 3 is a schematic view of the light guide plate testing structure of the present invention;

fig. 4 is a schematic structural view of a touch panel according to the present invention;

wherein: 1-a touch panel; 11-AG film; 12-AR film; 2-a light guide plate; 21-optical dots; 22-blue light blocking film; 3-reflective TFT display panel; 4-a luminophore.

Detailed Description

In order to explain technical contents, structural features, and objects and effects of the present invention in detail, the following description is given in conjunction with the embodiments and the accompanying drawings.

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

Referring to the schematic structural diagram of the front light source display module shown in fig. 1, the front light source display module includes a touch panel 1, a light guide plate 2, and a reflective TFT display panel 3, which are stacked; the utility model discloses utilize 2 increases reflective display TFT display panel of light guide plate to show the readability under the environment such as the light of dark state etc. is more weak.

The design principle of the light guide plate 2 is derived from a liquid crystal display screen of a notebook computer, and a linear light source can be converted into a surface light source; the light guide plate 2 uses optical grade acrylic (PMMA)/PC as a base material, and uses the backlight module technology of LCD display screens and notebook computers, and the light of the light guide plate 2 is refracted into a surface light source uniform light state to manufacture and form through the high light ray conductivity of the optical dots 21 and the calculation of the optical dots 21 by the computers.

As shown in fig. 2 and fig. 3, the light guide plate 2 has a schematic structural diagram, the optical dots 21 are disposed on the side surface of the light guide plate 2 close to the touch panel 1, the optical dots 21 are arranged in an array, and a blue light blocking film 22 covers the surface of the optical dots 21, after the light transmittance spectrum test is performed by a spectrometer through the analysis of test data, the filtering effect of the 430-480nm band high-energy blue light medium is significant, and the purpose of preventing blue light can be achieved.

As shown in the figure, the light guide plate 2 is a side light-entering light guide plate 2, a light emitting body 4 is installed on the side surface of the light guide plate 2, and preferably, the light emitting body 4 is an LED lamp bead with long service life and stronger energy saving.

Referring to fig. 4, a schematic structural diagram of the touch panel 1 is shown, an AG anti-glare protective film (for short, AG film) is vacuum-evaporated on a side surface of the touch panel 1 away from the light guide plate 2, and the AG film 11 has the characteristics of fingerprint resistance, oil stain resistance, high light transmittance and the like, can effectively eliminate strong glare, and prevents ultraviolet rays and infrared rays from penetrating through; the AR film antireflection glass (for short, AR film) is evaporated in vacuum on the side surface of the touch panel 1 close to the light guide plate 2, and the AR film 12 has an antireflection characteristic, so that the reflectivity of the touch panel 1 to external environment light can be effectively reduced, and a better display effect can be obtained.

Further, the touch panel 1, the light guide plate 2 and the reflective TFT display panel 3 are bonded by using optical cement, that is, the AR side of the touch panel 1 and the blue light barrier film 22 are bonded by using optical cement, the non-dot surface on the other side of the light guide plate 2 and the reflective TFT display panel 3 are also bonded by using optical cement, and the optical cement has high light-guiding performance, so that the penetrating influence on light is reduced, and the loss of brightness is less. Preferably, the optical cement includes an optical adhesive tape (OCA) and an Optically Clear Resin (OCR).

To sum up, the front light source display module provided by the utility model covers a blue light blocking film on the optical mesh points of the light guide plate, which can filter the blue light scattered by the front light source diffuser plate, reduce the stimulation of the screen to the eyes and protect the eyesight; meanwhile, an AG anti-glare protective film and AR coated antireflection glass are evaporated on the touch panel, and the display module assemblies are completely laminated by optical cement, so that the mirror reflection is greatly reduced, the dilution of reflected content light by natural light and front light source light is reduced, and the color gamut and the contrast are improved.

The above only is the embodiment of the present invention, not limiting the patent scope of the present invention, all the equivalent structures or equivalent processes that are used in the specification and the attached drawings or directly or indirectly applied to other related technical fields are included in the patent protection scope of the present invention.

Claims

1. The front light source display module is characterized by comprising a touch panel, a light guide plate and a reflective TFT display panel which are sequentially stacked;

2. The front-light module as recited in claim 1, wherein the light guide plate is a side-entry light guide plate, and the light guide plate has a light emitter mounted on a side surface thereof.

3. The front-light source display module of claim 2, wherein the light emitting body is an LED lamp bead.

4. The front-light source display module according to claim 1, wherein an AG film is vacuum-evaporated on a side of the touch panel away from the light guide plate.

5. The front-light source display module according to claim 4, wherein an AR film is vacuum-deposited on a side of the touch panel close to the light guide plate.

6. The front-light source display module according to claim 1, wherein the touch panel, the light guide plate and the reflective TFT display panel are bonded together by using an optical adhesive.

7. The front-light source display module according to claim 6, wherein the optical adhesive comprises an optical adhesive tape and an optically transparent resin.