Backlight source and narrow frame module

Abstract

The utility model discloses a backlight source, which comprises a backlight frame, a light guide plate, a light guide plate and a light guide plate, the backlight assembly is arranged in the backlight groove of the backlight frame; and the photosensitive component is arranged in the photosensitive groove of the backlight frame. The backlight source is integrated with the photosensitive assembly, and the frame width of the liquid crystal display device can be reduced. The utility model further discloses a narrow frame module which comprises the backlight source.

Description

Technical Field

[0001] The utility model relates to the display field, in particular to a backlight source and a narrow frame module. Background Art

[0002] Existing LCD devices typically incorporate a photosensitive chip next to the display area to sense ambient light intensity and automatically adjust the backlight brightness. Currently, during assembly, the LCD module and photosensitive chip are attached to different areas of the same cover plate and then connected to the control board via separate flexible printed circuit boards (FPCs) for signal transmission. To avoid structural interference during assembly, sufficient clearance is required between the LCD module and the photosensitive chip, resulting in an excessively wide bezel. Utility Model Content

[0003] In order to solve the above-mentioned deficiencies in the prior art, the present invention provides a backlight source with an integrated photosensitive component, which can reduce the border width of a liquid crystal display device.

[0004] The utility model also provides a narrow-frame module, comprising the above-mentioned backlight source.

[0005] The technical problem to be solved by the present invention is achieved through the following technical solutions:

[0006] A backlight source, comprising:

[0007] A backlight frame has a backlight slot and a photosensitive slot on the same side surface;

[0008] A backlight assembly is disposed in the backlight slot of the backlight frame;

[0009] The photosensitive component is arranged in the photosensitive groove of the backlight frame.

[0010] Furthermore, the backlight assembly includes a backlight light bar, a light guide plate, and at least one optical film. The backlight light bar is arranged on the light incident surface of the light guide plate, and the at least one optical film is arranged on the light emitting surface of the light guide plate.

[0011] Furthermore, the backlight light bar includes a light-emitting device and a backlight FPC, one end of the backlight FPC is located in the backlight groove of the backlight frame, and the other end extends outside the backlight frame; the light-emitting device is mounted on the end of the backlight FPC located in the backlight groove of the backlight frame.

[0012] Furthermore, the photosensitive component includes a photosensitive chip and a photosensitive FPC, one end of the photosensitive FPC is located in the photosensitive slot of the backlight frame, and the other end extends outside the backlight frame; the photosensitive chip is mounted on one end of the photosensitive FPC located in the photosensitive slot of the backlight frame.

[0013] Furthermore, the backlight frame includes a metal frame and a plastic frame, the plastic frame is arranged in the metal frame and surrounds the backlight slot; the photosensitive slot is opened in the frame edge of the plastic frame.

[0014] Furthermore, the metal frame includes a metal backplate and a metal side wall connected to the periphery of the metal backplate; the plastic frame abuts against the metal side wall of the metal frame and exposes the metal backplate located in the backlight slot and the photosensitive slot; the backlight assembly and the photosensitive assembly are arranged on the metal backplate.

[0015] Furthermore, the metal back plate is protruded to form an embedding portion between the backlight groove and the photosensitive groove, and the embedding portion is embedded in the plastic frame.

[0016] A narrow-frame module, comprising:

[0017] The protective cover comprises a visible area and a frame area, wherein the frame area surrounds the visible area, and a light-shielding ink is provided on the back of the frame area, and the light-shielding ink is provided with a photosensitive hole;

[0018] a liquid crystal panel, disposed on the back of the protective cover and corresponding to the visible area of ​​the protective cover;

[0019] The above-mentioned backlight source is arranged on the back side of the liquid crystal panel, and the photosensitive component corresponds to the photosensitive hole on the protective cover.

[0020] Furthermore, semi-transparent ink is provided in the photosensitive hole.

[0021] Furthermore, the liquid crystal panel includes an upper polarizer, an upper substrate, a lower substrate and a lower polarizer stacked in sequence, the upper substrate and the lower substrate cover the photosensitive groove, and the upper polarizer and the lower polarizer avoid the photosensitive component located in the photosensitive groove.

[0022] The present invention has the following beneficial effects: the backlight source of the present invention integrates the photosensitive component into the backlight frame, the photosensitive component is used to sense the intensity of external light, and then adjust the brightness of the backlight component, and the photosensitive component is arranged on the back of the liquid crystal panel together with the backlight source during assembly. In this way, on the display plane, no gap needs to be reserved between the photosensitive component and the liquid crystal panel, and the border width of the liquid crystal display device can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a diagram of the stacking structure of the backlight source provided by the utility model.

[0024] Figure 2 This is a stacking structure diagram of the narrow-frame module provided by the utility model.

[0025] Figure 3 This is a front view of the protective cover in the narrow frame module provided by the present invention. DETAILED DESCRIPTION

[0026] The present invention is described in detail below with reference to 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.

[0027] 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.

[0028] Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature identified as "first," "second," or "third" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0029] In this utility model, unless otherwise expressly specified or limited, terms such as "installed," "connected," "connect," "fixed," and "set" should be understood in a broad sense. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0030] Example 1

[0031] like Figure 1 As shown, a backlight source includes:

[0032] The backlight frame 110 has a backlight slot 111 and a photosensitive slot 112 formed on the same side surface thereof;

[0033] The backlight assembly 120 is disposed in the backlight groove 111 of the backlight frame 110;

[0034] The photosensitive component 130 is disposed in the photosensitive groove 112 of the backlight frame 110 .

[0035] The backlight source of the present invention integrates the photosensitive component 130 into the backlight frame 110. The photosensitive component 130 is used to sense the intensity of external light and then adjust the brightness of the backlight component 120. The photosensitive component 130 is arranged on the back of the liquid crystal panel together with the backlight source during assembly. In this way, on the display plane, no gap needs to be reserved between the photosensitive component 130 and the liquid crystal panel, which can reduce the width of the border of the liquid crystal display device.

[0036] The backlight assembly 120 includes a backlight assembly 121 , a light guide plate 122 , and at least one optical film 123 . The backlight assembly 121 is disposed on the light incident surface of the light guide plate 122 , and the at least one optical film 123 is disposed on the light emitting surface of the light guide plate 122 .

[0037] In this embodiment, the at least one optical film 123 includes a diffusion film, a lower light-enhancing film and an upper light-enhancing film, and the diffusion film, the lower light-enhancing film and the upper light-enhancing film are sequentially arranged on the light-emitting surface of the light guide plate 122; the backlight assembly 120 also includes a reflective sheet 124, and the reflective sheet 124 is arranged on the back side of the light guide plate 122 opposite to its light-emitting surface, and is used to reflect the backlight emitted from the back side of the light guide plate 122 back into the light guide plate 122 to improve the backlight utilization rate.

[0038] The backlight assembly 121 includes a light-emitting device 125 and a backlight FPC 126, one end of the backlight FPC 126 is located in the backlight groove 111 of the backlight frame 110, and the other end extends outside the backlight frame 110; the light-emitting device 125 is mounted on the end of the backlight FPC 126 located in the backlight groove 111 of the backlight frame 110.

[0039] In this embodiment, the light emitting devices 125 are LEDs, etc., and there are multiple of them, which are evenly spaced apart on one end of the backlight FPC 126 located in the backlight groove 111 of the backlight frame 110 .

[0040] The photosensitive component 130 includes a photosensitive chip 131 and a photosensitive FPC 132, one end of the photosensitive FPC 132 is located in the photosensitive slot 112 of the backlight frame 110, and the other end extends outside the backlight frame 110; the photosensitive chip 131 is mounted on one end of the photosensitive FPC 132 located in the photosensitive slot 112 of the backlight frame 110.

[0041] FPC is short for Flexible Printed Circuit, also known as "soft board" or "flexible printed circuit board." It is a circuit board made of flexible materials (such as polyimide or polyester film) that can be bent, folded, and twisted to adapt to different space and application requirements.

[0042] The utility model mounts the light-emitting device 125 of the backlight assembly 120 and the photosensitive chip 131 of the photosensitive assembly 130 on the backlight FPC 126 and the photosensitive FPC 132, respectively, so that the light-emitting device 125 and the photosensitive chip 131 can be electrically connected to the control mainboard by bending the backlight FPC 126 and the photosensitive FPC 132 during assembly.

[0043] The backlight frame 110 includes a metal frame 113 and a plastic frame 114 . The plastic frame 114 is disposed inside the metal frame 113 and surrounds the backlight slot 111 . The photosensitive slot 112 is opened inside the frame edge of the plastic frame 114 .

[0044] In this embodiment, the metal frame 113 may be an iron frame, a stainless steel frame, or an aluminum frame, and the plastic frame 114 may be a polycarbonate frame or an acrylic frame. The specific materials of the metal frame 113 and the plastic frame 114 are not limited.

[0045] The number and shape of the edges of the plastic frame 114 depend on the specific shape of the backlight. For example, in a common rectangular backlight, the plastic frame 114 has four linear edges, corresponding to the four sides of the rectangular backlight, and the four linear edges are connected end to end. In this case, the photosensitive groove 112 can be located on any linear edge of the plastic frame 114 (generally the upper linear edge). For another example, in a common circular backlight, the plastic frame 114 has only one annular edge, corresponding to the circumference of the circular backlight. In this case, the photosensitive groove 112 can be located at any position on the annular edge of the plastic frame 114 (generally the upper end of the annular edge).

[0046] Preferably, the metal frame 113 includes a metal backplate 115 and a metal side wall 116 connected to the periphery of the metal backplate 115; the plastic frame 114 abuts against the metal side wall 116 of the metal frame 113, and exposes the metal backplate 115 located in the backlight groove 111 and the photosensitive groove 112; the backlight assembly 120 and the photosensitive assembly 130 are arranged on the metal backplate 115 to improve the heat dissipation performance of the backlight assembly 120 and the photosensitive assembly 130.

[0047] The metal back plate 115 is protruded with an embedding portion 117 between the backlight groove 111 and the photosensitive groove 112. The embedding portion 117 is embedded in the plastic frame 114 to improve the strength of the plastic frame 114 located between the backlight groove 111 and the photosensitive groove 112, and to prevent the plastic frame 114 here from breaking due to being thinned by digging the photosensitive groove 112.

[0048] Example 2

[0049] like Figure 2 and 3 As shown, a narrow-frame module includes:

[0050] The protective cover 3 includes a visible area 310 and a frame area 320 . The frame area 320 surrounds the visible area 310 . A light-shielding ink 330 is provided on the back of the frame area 320 . The light-shielding ink 330 has a photosensitive hole 331 .

[0051] The liquid crystal panel 2 is provided on the back of the protective cover 3 and corresponds to the visible area 310 of the protective cover 3;

[0052] The backlight source 1 described in the first embodiment is disposed on the back surface of the liquid crystal panel 2 , and the photosensitive component 130 corresponds to the photosensitive hole 331 on the protective cover 3 .

[0053] The backlight source 1 of the present invention integrates the photosensitive component 130 into the backlight frame 110. The photosensitive component 130 is used to sense the intensity of external light and then adjust the brightness of the backlight component 120. The photosensitive component 130 is arranged on the back of the liquid crystal panel 2 together with the backlight source 1 during assembly. In this way, on the display plane, no gap needs to be reserved between the photosensitive component 130 and the liquid crystal panel 2, which can reduce the width of the border of the liquid crystal display device.

[0054] In this embodiment, the liquid crystal panel 2 is fixed to the back of the protective cover 3 by means of OCA optical glue 4, and the backlight source 1 is fixed to the back of the liquid crystal panel 2 by means of a light-shielding tape 140 having a first hollow area 141 and a second hollow area 142, wherein the first hollow area 141 corresponds to the backlight assembly 120 located in the backlight groove 111, and the second hollow area 142 corresponds to the photosensitive assembly 130 located in the photosensitive groove 112.

[0055] A main screen FPC250 is bound to one side of the liquid crystal panel 2, and the backlight FPC of the backlight component 120 and the photosensitive FPC132 of the photosensitive component 130, one end extending outside the backlight frame 110, are overlapped on the main screen FPC250. After being bent, the main screen FPC250 is electrically connected to the control main board (not shown in the figure) located on the back of the backlight source 1, and the backlight FPC and photosensitive FPC132 are indirectly electrically connected to the control main board through the main screen FPC250.

[0056] In this embodiment, the light-shielding ink 330 is black ink.

[0057] A semi-transparent ink 332 is provided in the photosensitive hole 331 to hide the photosensitive component 130 and filter out ambient stray light.

[0058] In this embodiment, the semi-transparent ink 332 is an infrared cut-off ink to filter out infrared light in the ambient light to prevent the infrared light from affecting the sensing effect of the photosensitive component 130 .

[0059] The liquid crystal panel 2 includes an upper polarizer 210, an upper substrate 220, a lower substrate 230 and a lower polarizer 240 stacked in sequence, the upper substrate 220 and the lower substrate 230 cover the photosensitive groove 112, and the upper polarizer 210 and the lower polarizer 240 avoid the photosensitive component 130 located in the photosensitive groove 112.

[0060] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the embodiments of the present invention rather than to limit them. Although the embodiments of the present invention are described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solutions of the embodiments of the present invention 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 present invention.

Claims

1. A backlight source, characterized in that: include: A backlight frame, with a backlight slot and a photosensitive slot formed on the same side surface; A backlight assembly is disposed in the backlight slot of the backlight frame; The photosensitive component is arranged in the photosensitive groove of the backlight frame.

2. The backlight source according to claim 1, characterized in that: The backlight assembly includes a backlight light bar, a light guide plate and at least one optical film. The backlight light bar is arranged on the light incident surface of the light guide plate, and the at least one optical film is arranged on the light emitting surface of the light guide plate.

3. The backlight source according to claim 2, characterized in that: The backlight strip includes a light emitting device and a backlight FPC, one end of the backlight FPC is located in the backlight groove of the backlight frame, and the other end extends outside the backlight frame; the light emitting device is mounted on one end of the backlight FPC located in the backlight groove of the backlight frame.

4. The backlight source according to claim 1, characterized in that: The photosensitive component includes a photosensitive chip and a photosensitive FPC, one end of the photosensitive FPC is located in the photosensitive slot of the backlight frame, and the other end extends outside the backlight frame; the photosensitive chip is mounted on one end of the photosensitive FPC located in the photosensitive slot of the backlight frame.

5. The backlight source according to claim 1, characterized in that: The backlight frame comprises a metal frame and a plastic frame. The plastic frame is arranged inside the metal frame and surrounds the backlight slot. The photosensitive slot is arranged inside the frame edge of the plastic frame.

6. The backlight source according to claim 5, characterized in that: The metal frame includes a metal back plate and a metal side wall connected to the periphery of the metal back plate; the plastic frame abuts against the metal side wall of the metal frame and exposes the metal back plate located in the backlight slot and the photosensitive slot; the backlight assembly and the photosensitive assembly are arranged on the metal back plate.

7. The backlight source according to claim 6, characterized in that: The metal back plate is protruded between the backlight slot and the photosensitive slot to form an embedding portion, and the embedding portion is embedded in the rubber frame.

8. A narrow frame module, characterized in that: include: The protective cover comprises a visible area and a frame area, wherein the frame area surrounds the visible area, and a light-shielding ink is arranged on the back of the frame area, and the light-shielding ink is provided with a photosensitive hole; A liquid crystal panel, disposed on the back of the protective cover plate, corresponding to the visible area of ​​the protective cover plate; The backlight source described in claim 1 is arranged on the back side of the liquid crystal panel, and the photosensitive component corresponds to the photosensitive hole on the protective cover.

9. The narrow frame module according to claim 8, characterized in that: Semi-transparent ink is arranged in the photosensitive hole.

10. The narrow frame module according to claim 8, characterized in that: The liquid crystal panel includes an upper polarizer, an upper substrate, a lower substrate and a lower polarizer which are stacked in sequence. The upper substrate and the lower substrate cover the photosensitive groove, and the upper polarizer and the lower polarizer avoid the photosensitive component located in the photosensitive groove.

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