CN105044979B - A kind of mobile phone and its narrow screen Rimless LCDs - Google Patents

Abstract

The invention discloses a mobile phone and its narrow-screen frameless liquid crystal display. The narrow-screen frameless liquid crystal display includes: a frame body, the frame body has a concave cavity; it is arranged above the frame body and sealed A liquid crystal display panel with a concave cavity, the width of the liquid crystal display panel is greater than the width of the concave cavity, and a light-shielding glue for connecting and fixing the liquid crystal display panel and the frame body is arranged between the liquid crystal display panel and the frame body; it is arranged on the liquid crystal display panel A screen body above the panel for protecting the liquid crystal display panel; and a backlight system arranged in the concave cavity. Adopting the present invention can increase the screen ratio of the liquid crystal display at the same time under the premise of ensuring the strength of the liquid crystal display, reduce the black border area, enhance user experience, and improve the reliability of the backlight system; and because the thickness of the frame is reduced, thus It can reduce the consumption of raw materials, save materials and reduce production costs. In addition, the liquid crystal display screen of the present invention is easy to assemble and is beneficial to market promotion.

Description

A mobile phone and its narrow-screen borderless liquid crystal display

technical field

The invention relates to the field of liquid crystal display screens, in particular to a mobile phone and a narrow screen borderless liquid crystal display screen thereof.

Background technique

With the intelligent development of mobile phones and users' pursuit of the appearance of mobile phones, this requires that the backlight of the mobile phone should be designed so that the distance from the left and right edges of the LCD (liquid crystal display panel) to the left and right edges of the LCM (liquid crystal display) tends to zero, so that The mobile phone screen has a larger proportion and is more visually impactful, which meets market demand.

At present, the liquid crystal display screen of the prior art mainly includes an iron frame, a plastic frame, a liquid crystal display panel, a reflection sheet, a light guide plate, a diffusion sheet, a prism sheet, a light-shielding glue, a lamp and an FPC circuit; a liquid crystal display panel, a reflection sheet, and a light guide plate , diffusion sheet, prism sheet and lights are all set in the concave cavity formed by the iron frame and the plastic frame. The thicker the plastic frame and iron frame are, the more guaranteed the structural performance, mechanical strength, and protection of static electricity of the mobile phone LCD screen are, but it meets Can not meet the requirements of narrow borders and high screen-to-body ratio.

With the advancement of technology, the integrated injection molding of iron frame and plastic frame has appeared on the market. The liquid crystal display panel is set in the concave cavity formed by the integrated iron frame and plastic frame. In this way, the liquid crystal display panel can be better protected However, the width of the LCD screen is equal to the width of the LCD panel plus twice the assembly gap of the LCD panel plus twice the width of the plastic frame. Usually, the assembly gap of the LCD panel is 0.05~0.1 mm, and the plastic frame The width is 0.15~0.2mm. When the width of the liquid crystal display body is constant, due to the increase of the width of the plastic frame, the width of the corresponding liquid crystal display panel will be reduced, so the requirements of narrow frame and high screen ratio cannot be realized, and the requirements of higher requirements cannot be met. user experience.

Therefore, the prior art still needs to be improved and developed.

Contents of the invention

The technical problem to be solved by the present invention is to provide a mobile phone and its narrow-screen frameless liquid crystal display, which can improve the screen ratio and reduce the The black border area of the LCD screen enhances the user experience.

The technical solution adopted by the present invention to solve technical problems is as follows:

A narrow screen borderless liquid crystal display, comprising:

a frame body, the frame body has a concave cavity;

A liquid crystal display panel arranged above the frame and covering the concave cavity, the width of the liquid crystal display panel is greater than the width of the concave cavity, and a device for connecting the liquid crystal display panel to the frame is provided between the liquid crystal display panel and the frame fixed light-shielding glue;

A screen body arranged above the liquid crystal display panel for protecting the liquid crystal display panel;

And, the backlight system arranged in the concave cavity.

As a preferred solution, an assembly gap X1 is formed between the left and right side edges of the liquid crystal display panel and the left and right side edges of the screen body, and X1 is 0.1-0.14mm, and the width of the screen body is equal to the width of the liquid crystal display panel plus Twice the assembly clearance.

As a preferred solution, the backlight system includes a reflection sheet, a light guide plate, a diffusion sheet, a lower brightness enhancement sheet and an upper brightness enhancement sheet stacked sequentially from bottom to top.

As a preferred solution, the backlight system further includes a first circuit board, a second circuit board and LED lights, the first circuit board is electrically connected to the liquid crystal display panel, and the second circuit board is electrically connected to the LED lights connect.

As a preferred solution, an assembly gap X2 is formed between the outer edge of the light-shielding glue and the outer edge of the screen, and X2 is 0.05-0.1 mm.

As a preferred solution, the liquid crystal display panel has a visible area, and the distance between the inner edge of the light-shielding glue and the visible area of the liquid crystal display panel is greater than 0.35 mm.

As a preferred solution, the frame body includes a plastic frame and an iron frame, and the plastic frame and the iron frame are integrally injection molded.

As a preferred solution, the height of the left and right side edges of the iron frame is lower than that of the plastic frame, and the liquid crystal display panel is fixed on the plastic frame by light-shielding glue.

As a preferred solution, the height difference formed between the left and right sides of the iron frame and the left and right sides of the plastic frame is X3, and the value range of X3 is: 0.15mm<X3<0.4mm.

A mobile phone includes the narrow-screen borderless liquid crystal display screen.

In the narrow-screen borderless liquid crystal display provided by the present invention, the liquid crystal display panel is arranged above the frame body and covers the concave cavity of the frame body, and the width of the liquid crystal display panel is greater than the width of the concave cavity. The light-shielding glue is set between the liquid crystal display panel and the frame body, thus replacing the traditional method of setting the liquid crystal display panel in the concave cavity of the frame body, thereby improving the strength of the liquid crystal display screen while ensuring the strength of the liquid crystal display screen. The screen-to-body ratio is reduced, the black border area is reduced, the user experience is enhanced, and the reliability of the backlight system is improved; and because the thickness of the frame is reduced, it can reduce the amount of raw materials, save materials, and reduce production costs. In addition, the liquid crystal display screen of the present invention is easy to assemble and is beneficial to market promotion.

Description of drawings

Fig. 1 is a schematic structural view of a preferred embodiment of a narrow-screen borderless liquid crystal display of the present invention;

Fig. 2 is a partially enlarged schematic view at A of Fig. 1;

Fig. 3 is a side view of a preferred embodiment of a narrow-screen borderless liquid crystal display of the present invention;

Fig. 4 is a partial enlarged schematic view at B of Fig. 3;

Fig. 5 is a schematic diagram of the structure between the light-shielding glue, the screen body, and the liquid crystal display panel of a narrow-screen borderless liquid crystal display of the present invention;

Fig. 6 is a partially enlarged schematic view at C of Fig. 5;

Fig. 7 is a structural schematic diagram of a frame;

FIG. 8 is a partially enlarged schematic diagram at D in FIG. 7 .

Detailed ways

In order to make the object, technical solution and advantages of the present invention more clear and definite, the present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

Referring to FIG. 3 and FIG. 4 , a narrow-screen borderless liquid crystal display of the present invention includes a frame body 10 , a liquid crystal display panel 20 , a screen body 30 and a backlight system 40 .

7 and 8, the frame body 10 includes a plastic frame 11 and an iron frame 12. In this embodiment, the plastic frame 11 and the iron frame 12 are integrally injection molded. The method of separating the frame 11 from the iron frame 12 and adopting integral injection molding can increase the reliability of the backlight system 40 . The left and right side edges of the iron frame 12 are lower than the left and right side edges of the plastic frame 11, and the liquid crystal display panel 20 is fixed on the plastic frame 11, so that direct contact between the iron frame 12 and the liquid crystal display panel 20 can be avoided, resulting in liquid crystal display. When the display panel 20 is scratched, the height difference formed between the left and right sides of the iron frame 12 and the left and right sides of the plastic frame 11 is X3 (as shown in FIG. 8 ). Specifically, the value range of X3 It is: 0.15mm<X3<0.4mm.

Referring to FIG. 4 , the frame body 10 has a cavity 13 . The liquid crystal display panel 20 is disposed above the frame body 10 and covers the concave cavity 13 . The width of the liquid crystal display panel 20 is greater than the width of the concave cavity 13, thereby replacing the traditional method of setting the liquid crystal display panel 20 in the concave cavity 13 of the frame body 10, thereby effectively increasing the screen occupation of the liquid crystal display panel 20. ratio, and the thickness of the frame body 10 is reduced, thereby reducing the amount of raw materials used, saving materials, and reducing production costs. Specifically, please refer to FIG. 1 , the screen body 30 is disposed above the liquid crystal display panel 20 to protect the liquid crystal display panel 20 . As shown in Figure 2, an assembly gap X1 is formed between the left and right side edges of the liquid crystal display panel 20 and the left and right side edges of the screen body 30, and X1 is 0.1-0.14 mm. Then, the width of the screen body 30 is equal to that of the liquid crystal display. The width of the panel 20 plus twice the assembly gap greatly increases the screen ratio and reduces the black border area of the liquid crystal display.

Please refer to FIG. 4 , the backlight system 40 is disposed in the concave cavity 13 . Specifically, the backlight system 40 includes a reflective sheet 41 , a light guide plate 42 , a diffusion sheet 43 , a lower brightness enhancement sheet 44 and an upper brightness enhancement sheet 45 stacked sequentially from bottom to top. The gap between the reflective sheet 41 and the inner edge of the frame body 10 is 0.1-0.15 mm, and the gap between the light guide plate 42 and the inner edge of the frame body 10 is 0.05-0.1 mm. Preferably, as shown in FIG. 1, the backlight system 40 further includes a first circuit board 46, a second circuit board 47 and LED lights (not shown in the figure), and the first circuit board 46 is electrically connected to the liquid crystal display panel 20. The second circuit board 47 is electrically connected with the LED lamp.

Preferably, please refer to FIG. 4 , a light-shielding glue 50 for connecting and fixing the liquid crystal display panel 20 and the frame body 10 is disposed between the liquid crystal display panel 20 and the frame body 10 . The light-shielding glue 50 improves the optical effect while satisfying the narrow screen. Please refer to FIG. 5 and FIG. 6 , an assembly gap X2 is formed between the outer edge of the light-shielding glue 50 and the outer edge of the screen body 30 , and X2 is 0.05-0.1 mm. The liquid crystal display panel 20 has a visible area 21, the distance between the inner edge of the light-shielding glue 50 and the visible area 21 of the liquid crystal display panel 20 is X4, and X4 is greater than 0.35 mm, so that the liquid crystal display panel 20 can be guaranteed The area of the visible area 21 is smaller than the area of the backlight light-emitting area, so as to avoid the area of the visible area 21 of the liquid crystal display panel 20 being larger than the area of the backlight light-emitting area, thereby causing the liquid crystal display panel 20 to have an obvious dark area when displaying, thereby causing the display The phenomenon of area waste occurs. In this embodiment, the light-shielding glue 50 is black and black. The black-and-black light-shielding glue has good light-shielding performance and viscosity, and can paste and fix the liquid crystal display panel 40 and the frame body 10, so that the present invention has good reliability. It can operate under high and low temperature conditions, and has good resistance to high temperature, high humidity and thermal shock, preventing light leakage. Of course, the light-shielding glue 50 is not limited to black and black light-shielding glue, and the light-shielding glue 50 can also be black and white light-shielding glue.

The present invention also provides a mobile phone, which includes the aforementioned narrow-screen and borderless liquid crystal display.

The assembly process of the present invention is as follows:

First, the plastic frame 11 and the iron frame 12 are integrally injection molded;

Next, stack the reflective sheet 41, the light guide plate 42, the diffusion sheet 43, the lower brightness enhancement sheet 44 and the upper brightness enhancement sheet 45 in the concave cavity 13 from bottom to top, and ensure that the reflection sheet 41 reaches the inner edge of the frame body 10 The gap between them is 0.1~0.15mm, and the gap between the light guide plate 42 and the inner edge of the frame body 10 is 0.05~0.1mm;

Then, paste one side of the light-shielding glue 50 on the frame body 10 through a special jig, and ensure that the assembly gap X2 formed between the outer edge of the light-shielding glue 50 and the outer edge of the screen body 30 is 0.05-0.1 mm, so The distance X4 between the inner edge of the light-shielding glue 50 and the visible area 21 of the liquid crystal display panel 20 is greater than 0.35mm;

Finally, paste and fix the liquid crystal display panel 20 and the other side of the light-shielding glue 50 with a special fixture, and ensure that the assembly gap X1 formed between the left and right side edges of the liquid crystal display panel 20 and the left and right side edges of the screen body 30 is 0.1~0.14mm.

It should be understood that the application of the present invention is not limited to the above examples, and those skilled in the art can make improvements or transformations according to the above descriptions, and all these improvements and transformations should belong to the protection scope of the appended claims of the present invention.

Claims (8)

1. A kind of 1. narrow screen Rimless LCDs, it is characterised in that including：

   Framework, the framework have a cavity；

   It is arranged above framework and covers the liquid crystal display panel of cavity, the width of the liquid crystal display panel is more than cavity Width, the shading for liquid crystal display panel and framework to be connected is provided between the liquid crystal display panel and framework Glue；

   The screen body for being used to protect liquid crystal display panel being arranged above liquid crystal display panel；

   And it is arranged at the back light system in cavity;

   The left and right lateral margin of the liquid crystal display panel to screen body left and right lateral margin between formed fit-up gap X1, X1 be 0.1 ~ 0.14mm, the width of the screen body add twice of fit-up gap equal to the width of liquid crystal display panel；Outside the shading glue Lateral margin forms fit-up gap X2 between the lateral border of screen body, and X2 is 0.05 ~ 0.1mm, and the shading glue is black shading glue.
2. 2. a kind of narrow screen Rimless LCDs according to claim 1, it is characterised in that the back light system includes Reflector plate, light guide plate, diffusion sheet, lower brightening piece and the upper brightening piece stacked successively from lower to upper.
3. 3. a kind of narrow screen Rimless LCDs according to claim 2, it is characterised in that the back light system also wraps First circuit board, second circuit board and LED are included, the first circuit board is electrically connected with liquid crystal display panel, and described second Circuit board is electrically connected with LED.
4. A kind of 4. narrow screen Rimless LCDs according to claim 1, it is characterised in that the liquid crystal display panel With viewing area, the distance between interior lateral margin of the shading glue to the viewing area of liquid crystal display panel is more than 0.35mm.
5. 5. a kind of narrow screen Rimless LCDs according to claim 1, it is characterised in that the framework includes glue frame With chase, the glue frame passes through integrated injection molding with chase.
6. A kind of 6. narrow screen Rimless LCDs according to claim 5, it is characterised in that the left and right sides of the chase Edge is highly fixed in glue frame less than the left and right lateral margin height of glue frame, the liquid crystal display panel by shading glue.
7. A kind of 7. narrow screen Rimless LCDs according to claim 6, it is characterised in that described chase or so lateral margin The difference in height formed between glue frame or so lateral margin is X3, and X3 span is：0.15mm ＜ X3 ＜ 0.4mm.
8. 8. a kind of mobile phone, it is characterised in that including the narrow screen Rimless LCDs described in any one of claim 1 to 7.