Display screen module integrated with light sensation IC

Abstract

The utility model discloses a display screen module integrated with a light sensation IC. The display screen module comprises a display screen; one end of the main screen FPC is bound and connected to the display screen, a light through hole is formed in the main screen FPC, and an IC bonding pad surrounding the light through hole is arranged on the back face of the main screen FPC; and the light sensing IC is welded on the IC bonding pad of the main screen FPC, and the light sensing surface of the light sensing IC is exposed from the light through hole of the main screen FPC. The display screen module can reduce the material cost.

Description

Technical Field

[0001] The utility model relates to the display field, in particular to a display screen module with an integrated light-sensing IC. Background Art

[0002] Existing mobile phones and other devices generally have a light-sensing IC next to the display screen to sense the ambient light intensity and automatically adjust the brightness of the display screen. Currently, the display screen and the light-sensing IC are attached to different areas of the same cover plate during assembly, and then connected to the control main board through their own FPCs for signal transmission, which has a high material cost. Utility Model Content

[0003] In order to solve the above-mentioned deficiencies of the prior art, the utility model provides a display screen module with an integrated light-sensing IC, which can reduce material costs.

[0004] The technical problem to be solved by the utility model is achieved through the following technical solutions:

[0005] A display screen module with integrated light sensing IC, comprising:

[0006] Display screen;

[0007] The main screen FPC has one end bound and connected to the display screen, has a light hole, and has an IC pad surrounding the light hole on the back;

[0008] The photosensitive IC is welded on the IC pad of the main screen FPC, and its photosensitive surface is exposed from the light-through hole of the main screen FPC.

[0009] Furthermore, the display screen module also includes a protective cover plate, which includes a visible area and a photosensitive area. The display screen is arranged on the visible area on the back of the protective cover plate, and the part of the main screen FPC corresponding to the photosensitive IC is arranged on the photosensitive area on the back of the protective cover plate.

[0010] Furthermore, the display screen is adhered to the visible area on the back side of the protective cover plate by OCA glue.

[0011] Furthermore, the portion of the main screen FPC corresponding to the light sensing IC is adhered to the light sensing area on the back of the protective cover plate by means of an annular or frame-shaped double-sided adhesive.

[0012] Furthermore, the double-sided adhesive tape is black double-sided adhesive tape.

[0013] Furthermore, a first moth-eye film covering the light-through hole is provided between the main screen FPC and the double-sided adhesive.

[0014] Furthermore, a second moth-eye film covering the light-through hole is provided between the light-sensing area of ​​the protective cover and the double-sided adhesive.

[0015] Furthermore, a semi-transparent ink is provided on the light-sensitive area on the back side of the protective cover.

[0016] Furthermore, black ink is provided on the back side of the protective cover plate, and the black ink avoids the visible area and the light-sensitive area.

[0017] Furthermore, the display screen is an LCD screen or an OLED screen.

[0018] The utility model has the following beneficial effects: the display screen module of the utility model solders the photosensitive IC to the main screen FPC of the display screen, and opens a light-through hole on the main screen FPC to expose the photosensitive surface of the photosensitive IC. During assembly, the photosensitive IC and the display screen are connected to the control mainboard of the terminal device through the main screen FPC for signal transmission, which saves the photosensitive FPC in the prior art, reduces the material cost of the product, and also eliminates one FPC connection process. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a front structural schematic diagram of the display screen module provided by the utility model.

[0020] Figure 2 for Figure 1 The AA cross-sectional structure diagram of the display screen module is shown.

[0021] Figure 3 This is a schematic diagram of the stacking structure of another display screen module provided by the utility model. DETAILED DESCRIPTION

[0022] The present invention is described in detail below in conjunction with the accompanying drawings and embodiments, examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0023] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0024] In addition, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first", "second", and "third" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0025] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix", "set" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. Embodiment 1

[0026] like Figure 1 and 2 As shown, a display screen module with integrated light sensing IC includes:

[0027] Display screen 10;

[0028] The main screen FPC 20 has one end 21 bound and connected to the display screen 10, and has a light hole 23, and an IC pad 24 surrounding the light hole 23 is provided on the back thereof;

[0029] The photosensitive IC 30 is soldered on the IC pad 24 of the main screen FPC 20 , and its photosensitive surface 31 is exposed from the light hole 23 of the main screen FPC 20 .

[0030] The display screen 10 module of the present invention is manufactured by welding the photosensitive IC 30 to the main screen FPC 20 of the display screen 10, and opening a light-through hole 23 on the main screen FPC 20 to expose the photosensitive surface 31 of the photosensitive IC 30. During assembly, the photosensitive IC 30 and the display screen 10 are connected to the control mainboard of the terminal device through the main screen FPC 20 for signal transmission, thereby saving the photosensitive FPC in the prior art, reducing the material cost of the product, and also eliminating one FPC connection process.

[0031] After the main screen FPC 20 is bound and connected to the display screen 10, it has a relative front and back when unfolded into a plane. The front side of the main screen FPC 20 after unfolding is on the same side as the display side of the display screen 10, and the back side of the main screen FPC 20 after unfolding is opposite to the display side of the display screen 10.

[0032] The photosensitive IC 30 has four pins, namely, SDA, IOVDD, SCL and GND. The main screen FPC 20 is provided with four pads corresponding to the four pins at the four positions of the light-through hole 23, so that the four pins of the photosensitive IC 30 are electrically connected to the internal wiring of the main screen FPC 20 through the four pads on the main screen FPC 20, and then connected to the mainboard connection terminal 22 of the main screen FPC 20 through the internal wiring.

[0033] In this embodiment, the display screen 10 is an LCD screen or an OLED screen. Embodiment 2

[0034] As an optimization solution of the first embodiment, in this embodiment, if Figure 3 As shown, the display screen 10 module also includes a protective cover plate 40, which includes a visible area and a photosensitive area; black ink 41 is provided on the back of the protective cover plate 40, and the black ink 41 avoids the visible area and the photosensitive area; semi-transparent ink 42 is provided on the photosensitive area on the back of the protective cover plate 40.

[0035] The display screen 10 is disposed on a visible area on the back side of the protective cover plate 40 , and a portion of the main screen FPC 20 corresponding to the photosensitive IC 30 is disposed on a photosensitive area on the back side of the protective cover plate 40 .

[0036] Preferably, the semi-transparent ink 42 is gray ink with a transmittance between 40% and 60%, so as to hide the photosensitive area and the photosensitive IC 30 to a certain extent, and prevent the photosensitive area and the photosensitive IC 30 from destroying the appearance consistency of the protective cover 40 .

[0037] In this embodiment, the display screen 10 is attached to the visible area on the back side of the protection cover plate 40 by means of OCA glue 50 .

[0038] The OCA adhesive 50, also called OCA optical adhesive (Optically Clear Adhesive), is a special adhesive used for bonding transparent optical elements (such as lenses, etc.), belonging to the category of pressure-sensitive adhesives, and its basic characteristics include colorless transparency, light transmittance of more than 95%, good bonding strength, and can be cured at room temperature or medium temperature with small curing shrinkage. Specifically, OCA optical adhesive is made of optical acrylic adhesive into a substrate-free high-transparency double-sided bonding tape, and its advantages include high clarity, strong light transmittance (full light transmittance>95%), high adhesion, water and high temperature resistance, and UV resistance. In addition, OCA optical adhesive also has a controlled thickness, can provide uniform spacing, and will not cause yellowing, peeling and deterioration problems after long-term use.

[0039] The portion of the main screen FPC 20 corresponding to the photosensitive IC 30 is attached to the photosensitive area on the back of the protective cover plate 40 through a ring-shaped or frame-shaped double-sided adhesive 60 .

[0040] Preferably, the double-sided adhesive 60 is a black double-sided adhesive. In addition to bonding and fixing the relative position of the photosensitive IC 30 and the photosensitive area, the black double-sided adhesive is also used for shading to prevent stray light from passing through the gap between the photosensitive IC 30 and the photosensitive area of ​​the protective cover, thereby improving the sensing accuracy of the photosensitive IC 30 to ambient light.

[0041] Since the portion of the main screen FPC 20 corresponding to the photosensitive IC 30 is adhered to the photosensitive area on the back of the protective cover plate 40 through the ring-shaped or frame-shaped double-sided adhesive 60, there is an air layer between the photosensitive area and the photosensitive IC 30. The refractive index of the air layer is greatly different from that of the protective cover plate 40, which easily causes a large reflectivity and affects the sensing accuracy of the photosensitive IC 30 for ambient light. Therefore, a first moth-eye film 70 covering the light-through hole 23 is provided between the main screen FPC 20 and the double-sided adhesive 60, and a second moth-eye film 80 covering the light-through hole 23 is provided between the photosensitive area of ​​the protective cover plate 40 and the double-sided adhesive 60.

[0042] The moth eye film is an optical film with an array of nano-scale protrusions on the surface. It is a bionic product that imitates the fine concave-convex structure in the eyes of moths. When the sub-micrometer structure size on the surface of the material is smaller than the wavelength of visible light, the light wave will not be able to recognize the microstructure, so the refractive index on the surface of the material changes continuously along the depth direction, which can reduce the reflection phenomenon caused by the sharp change of the refractive index. The utility model arranges the first moth eye film 70 and the second moth eye film 80 on both sides of the air layer respectively to reduce the reflectivity of the ambient light when passing through the air layer, thereby improving the sensing accuracy of the photosensitive IC 30 to the ambient light.

[0043] The first moth-eye film 70 is disposed on a portion of the main screen FPC 20 corresponding to the photosensitive IC 30 , and can also improve the FPC strength of this portion to improve the yield of welding the photosensitive IC 30 on the main screen FPC 20 .

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the embodiments of the utility model rather than to limit them. Although the embodiments of the utility model are described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the embodiments of the utility model can still be modified or replaced by equivalents, and these modifications or equivalent replacements cannot cause the modified technical solutions to deviate from the scope of the technical solutions of the embodiments of the utility model.

Claims

1. A display screen module with integrated light sensing IC, characterized in that: include: Display screen; The main screen FPC has one end bound and connected to the display screen, has a light hole, and has an IC pad surrounding the light hole on the back; The photosensitive IC is welded on the IC pad of the main screen FPC, and its photosensitive surface is exposed from the light-through hole of the main screen FPC.

2. The display screen module according to claim 1, characterized in that: The display screen module also includes a protective cover plate, which includes a visible area and a photosensitive area. The display screen is arranged on the visible area on the back of the protective cover plate, and the part of the main screen FPC corresponding to the photosensitive IC is arranged on the photosensitive area on the back of the protective cover plate.

3. The display screen module according to claim 2, characterized in that: The display screen is attached to the visible area on the back of the protection cover plate by OCA glue.

4. The display screen module according to claim 2, characterized in that: The portion of the main screen FPC corresponding to the photosensitive IC is bonded to the photosensitive area on the back of the protective cover plate through an annular or frame-shaped double-sided adhesive.

5. The display screen module according to claim 4, characterized in that: The double-sided adhesive is black.

6. The display screen module according to claim 4, characterized in that: A first moth-eye film covering the light-through hole is arranged between the main screen FPC and the double-sided adhesive.

7. The display screen module according to claim 4 or 6, characterized in that: A second moth-eye film covering the light-through hole is provided between the light-sensing area of ​​the protective cover plate and the double-sided adhesive.

8. The display screen module according to claim 2, characterized in that: Semi-transparent ink is provided on the light-sensitive area on the back of the protective cover plate.

9. The display screen module according to claim 2, characterized in that: Black ink is provided on the back of the protective cover plate, and the black ink avoids the visible area and the light-sensitive area.

10. The display screen module according to claim 1, characterized in that: The display screen is an LCD screen or an OLED screen.

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