CN116300203A

CN116300203A - Television module with single lamp strip and liquid crystal display television

Info

Publication number: CN116300203A
Application number: CN202310286185.6A
Authority: CN
Inventors: 陆进; 罗广晟; 周锐; 杨帆; 曾宪兵; 何健僖
Original assignee: Shenzhen Konka Electronic Technology Co Ltd
Current assignee: Shenzhen Konka Electronic Technology Co Ltd
Priority date: 2023-03-15
Filing date: 2023-03-15
Publication date: 2023-06-23

Abstract

The invention discloses a television module with a single lamp strip, which comprises a back plate and the single lamp strip arranged on the back plate, wherein the lamp strip comprises a steel back plate and a plurality of lamp beads which are arranged on the steel back plate and uniformly distributed along the length direction; the back plate is stuck with a reflecting sheet for exposing the lamp beads, a diffusion plate positioned above the reflecting sheet is arranged on the back plate, and a liquid crystal screen positioned above the diffusion plate is arranged on the back plate; the gradient alpha of the backboard meets the following conditions: when c is more than or equal to 25mm and less than or equal to 35mm,

c is the aboveThe vertical distance between the upper surface of the steel backboard and the lower surface of the diffusion plate; b is the width of the liquid crystal screen, and a liquid crystal television applying the television module is also disclosed; the display brightness and visual effect of adopting a plurality of lamp bars can be achieved by adopting a single lamp bar in the television module.

Description

Television module with single lamp strip and liquid crystal display television

Technical Field

The invention relates to the technical field of televisions, in particular to a television module with a single lamp strip and a liquid crystal television.

Background

With the technical development of light emitting diodes and the market demand for energy-saving low-carbon products, the liquid crystal television with the LED light source has become the mainstream of the existing liquid crystal television at present. The existing light entering mode of the backlight adopting the LED light source is divided into a direct type and a side entering type, and the direct type scheme has been widely used due to low cost and light weight.

For example, chinese patent CN203431608U discloses a direct type backlight module, a liquid crystal display and a liquid crystal television, the publication date is 2014, 02 and 12, and specifically describes that the direct type backlight module includes a reflective sheet and a backlight source disposed on the reflective sheet; the backlight light source comprises a plurality of light bars, and each light bar is provided with a plurality of light emitting diodes; each LED is correspondingly provided with a strip-shaped lens, and the long direction of the strip-shaped lens is set to be the direction with larger distance between the interval of adjacent light bars and the interval of the adjacent LEDs on the light bars; although the number is reduced by optimizing the pitch, the distance between the light emitting diodes and the lens use, the requirement that the light bars are uniformly arranged to realize good display brightness and visual effect is still adopted in the application, and further research is needed to continuously reduce the number of the light bars and maintain the display brightness of the light bars and obtain better visual effect.

Disclosure of Invention

First technical problem

The invention aims to provide a television module with a single lamp strip and a liquid crystal television, which solve the problem that the display brightness and visual effect of adopting a plurality of lamp strips can be achieved by adopting the single lamp strip in the television module.

(II) technical scheme

In order to achieve the above purpose, the present invention provides the following technical solutions:

the television module with the single lamp strip comprises a back plate and the single lamp strip arranged on the back plate, wherein the lamp strip comprises a steel back plate and a plurality of lamp beads which are arranged on the steel back plate and uniformly distributed along the length direction of the steel back plate; the back plate is stuck with a reflecting sheet for exposing the lamp beads, a diffusion plate positioned above the reflecting sheet is arranged on the back plate, and a liquid crystal screen positioned above the diffusion plate is arranged on the back plate; the gradient alpha of the backboard meets the following conditions:

when c is more than or equal to 25mm and less than or equal to 35mm,

c is the vertical distance between the upper surface of the steel backboard and the lower surface of the diffusion plate;

b is the width of the liquid crystal screen.

Preferably, the inner cavity plane of the backboard and the transition line of the cambered surface of the backboard and the first plane formed by the side edge of the cambered surface top of the backboard are the same, the inner cavity plane of the backboard is the second plane, and the included angle between the first plane and the second plane is the gradient alpha of the backboard.

Preferably, a membrane is adhered to the diffusion plate.

Preferably, the middle frame corner protection brackets are adhered to the back plate at the top side corners.

Preferably, a screen pasting double-sided adhesive foam and a middle frame foam are arranged between the back plate and the liquid crystal screen, the screen pasting double-sided adhesive foam and the middle frame foam are enclosed to form a rectangular structure, and a silica gel pad is arranged between the back plate and the middle frame foam.

Preferably, a front shell for pressing the middle frame foam is arranged on the back plate, and the front shell is fixed on the back plate through a fastener.

Preferably, a control shell, a control module, a power module, an audio module and a control interface are arranged on the back plate, wherein the control module, the power module, the audio module and the control interface are arranged in the control shell.

Preferably, two positioning convex hulls are arranged on the central line of the inner cavity plane of the backboard at intervals, and the positioning convex hulls are used for positioning and installing the steel backboard.

Preferably, the steel backboard and the backboard, and the steel backboard and the positioning convex hull are fastened through heat-resistant glue.

The invention also provides a liquid crystal display television, which comprises the television module with the single lamp strip as claimed in any one of claims 1-9.

(III) beneficial effects

After a single lamp strip is arranged on the back plate, the vertical distance between the upper surface of the steel back plate and the lower surface of the diffusion plate in the lamp strip, the width of the liquid crystal screen and the gradient of the back plate are satisfied

When the relation of the (2) is that the brightness uniformity of the liquid crystal screen can be realized by a single lamp strip, especially when the c is more than or equal to 25mm and less than or equal to 35mm, the brightness display and visual effect which can be realized by a plurality of lamp strips can be obtained;

particularly, after a better visual effect can be obtained by adopting a single lamp strip, the cost of the whole television module can be effectively reduced.

Drawings

FIG. 1 is a schematic diagram of an exploded structure of a TV module according to the present invention;

FIG. 2 is a schematic longitudinal sectional view of a television module according to the present invention;

FIG. 3 is a schematic cross-sectional view of a television module according to the present invention;

FIG. 4 is a schematic structural view of a back plate according to the present invention;

FIG. 5 is a schematic view of the bottom axis of the television module according to the present invention;

FIG. 6 is a schematic view showing the division of the brightness measurement points in the visible area of the LCD screen according to the present invention;

in fig. 1 to 6, the correspondence between the component names or lines and the drawing numbers is:

the liquid crystal display comprises a liquid crystal screen 1, double-sided adhesive foam 2, a membrane 3, a diffusion plate 4, a reflecting sheet 5, a middle frame corner protection bracket 6, a lamp strip 7, a back plate 8, a middle frame foam 9, a silica gel pad 10, a front shell 11, a fastener 12, a control shell 13, a first plane 14, a second plane 15 and a positioning convex hull 16.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.

Referring to fig. 1, fig. 2, and fig. 3, in an embodiment of the present invention, a television module with a single light bar 7 is provided, including a back plate 8 and a single light bar 7 mounted on the back plate 8, where the light bar 7 includes a steel back plate and a plurality of light beads uniformly distributed on the steel back plate along a length direction of the steel back plate, in this embodiment, the number of the light beads adopted is 8, specifically, two positioning convex hulls 16 are disposed at intervals on a central line of an inner cavity plane of the back plate 8, the positioning convex hulls 16 are used for positioning and mounting the steel back plate, and position fixing is achieved on the steel back plate through the positioning convex hulls 16, and meanwhile, between the steel back plate and the back plate 8, between the steel back plate and the positioning convex hulls 16, the steel back plate is further reliably fixed by heat-resistant glue. Because in the embodiment, compared with the prior art in which a plurality of light bars 7 are adopted, only a single light bar 7 is adopted, and the light beads on the light bars can be light emitting diodes, LEDs, etc., in order to be suitable for reflecting the light emitted by the light beads onto the diffusion plate 4, the back plate 8 is stuck with the reflective sheet 5 for exposing the light beads, the back plate 8 is provided with the diffusion plate 4 above the reflective sheet 5, the back plate 8 is provided with the liquid crystal screen 1 above the diffusion plate 4, and the liquid crystal screen 1 uniformly displays the light passing through the diffusion plate 4.

The visual effect of the liquid crystal screen 1 can be satisfied under the condition that only a single lamp strip 7 is adopted, the display brightness is improved, and the gradient alpha of the backboard 8 satisfies the following conditions:

when c is more than or equal to 25mm and less than or equal to 35mm,

where c is the vertical distance between the upper surface of the steel back plate and the lower surface of the diffusion plate 4, and b is the width of the liquid crystal screen 1.

Specifically, the cambered surfaces on both sides of the back plate 8 are the same, and the corresponding installation positions and distances can be controlled according to different sizes of the liquid crystal screen 1 under the condition that the conditions are met, so that good visual effect and display brightness can be ensured under the condition that a single lamp strip 7 is met.

For example, an assembled 55-inch lcd tv, with related parameters of b=695 mm, c=35 mm, α=7.3°, which satisfy

To further verify the visual display effect of the relevant parameters satisfying this relationship in the actual lcd tv, nine points in the visible area ABCD on the lcd screen 1 are selected, and the specific positions of the nine points are shown in fig. 6, where ae=ab, af=ac, five points of 2, 4, 5, 6, 8 are located on the center line of ABCD, and points 1 and 9, and

points

3 and 7 are centrally symmetrical about point 5, and the measured nine points of brightness are shown in the following table:

position of	Brightness (nit)	Position of	Brightness (nit)	Position of	Brightness (nit)
						1	145	2	173	3	151
4	229	5	255	6	234
						7	150	8	178	9	164

It can be seen from the above table that, in the case that the above condition is satisfied, the visual effect that is relatively uniform in the display area and the display brightness is ensured can be obtained after the installation distance between the light bar 7 and the diffusion plate 4 and the gradient of the back plate 8 are controlled and adjusted according to the size of the liquid crystal screen 1 (the width b of the liquid crystal screen 1), so that the above condition can be applied to the liquid crystal televisions with serial sizes, an optimization condition is provided for the design of the liquid crystal batteries with various sizes using the single light bar 7, and a good visual display effect is ensured.

Specifically, the gradient α of the back plate 8 is defined as follows, as shown in fig. 2 and fig. 4, a transition line between the inner cavity plane of the back plate 8 and the cambered surface of the back plate 8, and a first plane 14 formed by the top side edge of the cambered surface of the back plate 8 are defined, and the top side edge is an edge line of the front display surface and positioned at the top of the cambered surface of the back plate 8, because the cambered surface of the back plate 8 is unfavorable for direct measurement, the operation in practice is facilitated by taking the first plane 14 constructed by two boundary lines of the cambered surface as a measurement reference, and the influence caused by parameters such as the radian of the cambered surface can be avoided; meanwhile, the plane of the inner cavity of the back plate 8 is made to be a second plane 15, the included angle between the first plane 14 and the second plane 15 is the gradient α of the back plate 8, and specifically when the back plate 8 is designed, the structural form and the size of the back plate 8 can be controlled under the condition that the gradient α meets the above conditions.

Furthermore, the membrane 3 is adhered to the diffusion plate 4, and after the membrane 3 is adhered to the diffusion plate 4, the corresponding improvement of the light transmission effect can be achieved and the diffusion plate 4 can be protected.

Specifically, as shown in fig. 1, the middle frame corner protection brackets 6 are adhered to the top side corners of the back plate 8, and after the diffusion plate 4 and the membrane 3 are pressed and limited by the bending structures arranged at the edges of the back plate 8, the two corners at the top side of the back plate 8 are provided with suspended parts, and the middle frame corner protection brackets 6 are added to play a role of being flush with the bending structures, so that the liquid crystal screen 1 is convenient to be provided with a complete supporting plane when being installed to the bending structures, and the condition that the corners of the liquid crystal screen 1 are suspended is avoided.

Specifically, as shown in fig. 1 and 3, a screen pasting double faced adhesive foam 2 and a middle frame foam 9 are arranged between the back plate 8 and the liquid crystal screen 1, the screen pasting double faced adhesive foam 2 and the middle frame foam 9 enclose to form a rectangular structure, a silica gel pad 10 is arranged between the back plate 8 and the middle frame foam 9, the liquid crystal screen 1 is supported and fixed by the screen pasting double faced adhesive foam and the middle frame foam 9, the liquid crystal screen 1 is protected, and the middle frame foam 9 is stressed and buffered by the silica gel pad 10.

Specifically, as shown in fig. 1, a front shell 11 for compressing the middle frame foam 9 is installed on the back plate 8, the front shell 11 is fixed on the back plate 8 through a fastener 12, and after the opening position of the back plate 8 is fixed through the front shell 11, the limit effect is achieved on the installed diffusion plate 4 and the liquid crystal screen 1, and the fastener 12 is a screw.

Meanwhile, as shown in fig. 5, the control housing 13, and a control module, a power module, an audio module and a control interface which are installed in the control housing 13 are installed on the back plate 8, and specific other modules are integrated by modules required by the television in the prior art, which are not described here.

It should be noted that, the specific assembly process of the above module is not the content to be protected in this embodiment, and in the case where the corresponding positional relationship has been clearly explained, the specific assembly process may be adjusted accordingly when actually performing the assembly.

On the basis of the above embodiment, the present embodiment further provides a liquid crystal television, and the application of the television module with the single light bar 7 is convenient for implementing the adoption of the single light bar 7 in the liquid crystal televisions with multiple sizes and models, and can achieve good visual effect and ensure good display brightness; the components, structures, control modules and the like included in other televisions are not described herein and only need to adopt the prior art.

In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

In the description of the present invention, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships conventionally put in use of the inventive product, are merely for convenience of describing the present invention and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. A television module with single lamp strip, its characterized in that: the LED lamp comprises a back plate and a single lamp strip arranged on the back plate, wherein the lamp strip comprises a steel back plate and a plurality of lamp beads which are arranged on the steel back plate and uniformly distributed along the length direction of the steel back plate;

the back plate is stuck with a reflecting sheet for exposing the lamp beads, a diffusion plate positioned above the reflecting sheet is arranged on the back plate, and a liquid crystal screen positioned above the diffusion plate is arranged on the back plate;

the gradient alpha of the backboard meets the following conditions:

when c is more than or equal to 25mm and less than or equal to 35mm,

b is the width of the liquid crystal screen.

2. The television module with single light bar of claim 1, wherein: the inner cavity plane of the backboard and the transition line of the cambered surface of the backboard, and the first plane formed by the side edge of the cambered surface top of the backboard, the inner cavity plane of the backboard is a second plane, and an included angle between the first plane and the second plane is the gradient alpha of the backboard.

3. The television module with single light bar of claim 2, wherein: and a diaphragm is stuck on the diffusion plate.

4. A television module having a single light bar as claimed in claim 3, wherein: and middle frame corner protection brackets are adhered to the falling positions of the top side corners of the backboard.

5. The television module with single light bar of claim 4, wherein: the liquid crystal display panel is characterized in that screen pasting double-sided adhesive foam and middle frame foam are arranged between the back plate and the liquid crystal display panel, the screen pasting double-sided adhesive foam and the middle frame foam are enclosed to form a rectangular structure, and a silica gel pad is arranged between the back plate and the middle frame foam.

6. The television module with single light bar of claim 5, wherein: the back plate is provided with a front shell used for compressing the middle frame foam, and the front shell is fixed on the back plate through a fastener.

7. The television module with single light bar of any one of claims 1-6, wherein: the backboard is provided with a control shell, and a control module, a power module, an audio module and a control interface which are arranged in the control shell.

8. The television module with single light bar of claim 7, wherein: two positioning convex hulls are arranged on the central line of the inner cavity plane of the backboard at intervals, and are used for positioning and installing the steel backboard.

9. The television module with single light bar of claim 8, wherein: the steel backboard is fastened with the backboard, and the steel backboard is fastened with the positioning convex hull through heat-resistant glue.

10. A liquid crystal television, characterized in that: a television module comprising a single light bar as claimed in any one of claims 1 to 9.