Instrument indicating lamp adopting LCD backlight
Through LCD backlight design and the method of controlling the pen segment voltage, the problem of complex and compact backlight LED lamp structure in the prior art is solved, and the lighting of multiple indicator lights is realized, simplifying the design and saving space.
Patent Information
- Application Number
- CN202421263187.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-04
- Publication Date
- 2025-01-14
- Estimated Expiration
- 2034-06-04
AI Technical Summary
When the number of indicator lights is large, the backlight LED lights are complex and compact, making it difficult to layout, especially when adjacent indicator lights are close, it is difficult to effectively light multiple indicator lights.
The instrument indicator light design adopts LCD backlight, in which a black ink layer is set on the lower surface of the cover plate, the LCD module is set on the pen segment area where light can be transmitted, and the backlight module is set on the LCD module, and the LCD section area is controlled by controlling the To light up the indicator light pattern with voltage, at least one LED light can be used to light multiple indicator lights.
The backlight design is simplified, the structural space is saved, and multiple indicator lights are lit by controlling the voltage in the LCD pen segment area, avoiding complex backlight LED light layout problems.
Smart Images
Figure CN222354249U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of liquid crystal display, and more specifically to an instrument indicator light adopting LCD backlight. Background Art
[0002] Some industrial instruments, vehicle instruments and motorcycle instruments only have some fixed indicator light patterns. When the display is needed, the specific indicator light will light up to remind the operator. This is generally achieved by using a cover plate, backlight LED lamp and light guide strip. However, if there are many indicator lights, this structure will greatly increase the structural complexity of the backlight LED lamp, especially when two adjacent indicator lights are close to each other, the structure of the backlight LED lamp will be very compact, or even impossible to layout the LED lamp. Utility Model Content
[0003] The technical problem to be solved by the utility model is how to use a relatively small number of LED lamps to realize the lighting of multiple instrument indicator lights, thereby simplifying the backlight design and saving structural space.
[0004] The technical problem to be solved by the utility model is achieved through the following technical solutions:
[0005] In order to solve the above technical problems, the utility model provides an instrument indicator light using LCD backlight, which includes a cover plate, an LCD module and a backlight module, wherein a black ink layer is provided on the lower surface of the cover plate, and a plurality of indicator light patterns are provided on the black ink layer, and each indicator light pattern avoids the black ink layer; the LCD module is arranged below the cover plate, and a plurality of pen segment areas for controlling whether light is transmitted are arranged in the LCD module, and the number and position of the pen segment areas correspond to the number and position of the indicator light patterns; the backlight module is arranged below the LCD module.
[0006] As a preferred implementation of the instrument indicator light using LCD backlight provided by the utility model, the pen segment area completely covers the indicator light pattern.
[0007] As a preferred implementation of the instrument indicator light using LCD backlight provided by the utility model, an LED lamp is arranged in the backlight module, and there is at least one LED lamp.
[0008] As a preferred implementation of the instrument indicator light using LCD backlight provided by the utility model, the cover plate is fixed to the non-display area of the LCD module by double-sided adhesive.
[0009] As a preferred implementation of the instrument indicator light using LCD backlight provided by the utility model, there are eight indicator light patterns, and the eight indicator light patterns are arranged in two rows and distributed in sequence.
[0010] As a preferred implementation of the instrument indicator light using LCD backlight provided by the utility model, each indicator light pattern is silk-screened with semi-transparent black ink.
[0011] As a preferred implementation manner of the instrument indicator light using LCD backlight provided by the utility model, the LCD module includes an upper polarizer, an upper substrate, a lower substrate and a lower polarizer arranged in sequence from top to bottom, the contact surface of the upper polarizer and the upper substrate is provided with PSA glue, the backlight module is provided with an iron frame, the iron frame is provided with a grounding area, the outer edges of the LCD module and the backlight module are provided with opaque conductive material, one end of the opaque conductive material extends to the iron frame and wraps a portion of the iron frame, and the other end of the opaque conductive material extends to the PSA glue and is connected to the PSA glue.
[0012] As a preferred implementation of the instrument indicator light using LCD backlight provided by the utility model, the material of the opaque conductive material is copper foil or aluminum foil.
[0013] As a preferred implementation of the instrument indicator light using LCD backlight provided by the utility model, the other end of the opaque conductive material extends to the cover plate and exceeds the cover plate by 0.1 mm-0.2 mm.
[0014] As a preferred implementation of the instrument indicator light using LCD backlight provided by the utility model, the upper polarizer includes an upper TAC film, a PVA polarizing film, a lower TAC film and a PSA adhesive which are arranged in sequence from top to bottom.
[0015] The utility model has the following beneficial effects:
[0016] Since an LCD module is arranged above the backlight module, and a plurality of segments which can control whether light can pass through are arranged on the LCD module, when a segment on the LCD module is powered on, light can pass through the segment, and the indicator light pattern corresponding to the segment will be completely illuminated by the side backlight below, thereby realizing lighting up the corresponding indicator lights above by controlling the voltage of each segment of the LCD, and at least only one LED lamp can be used to realize lighting up of multiple instrument indicator lights, thereby simplifying the backlight design and saving structural space. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] In order to more clearly illustrate the scheme in the present application, a brief introduction is given below to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.
[0018] Figure 1 The utility model provides a structural schematic diagram of an instrument indicator light using LCD backlight.
[0019] Figure 2 for Figure 1 Bottom view of the cover plate.
[0020] Figure 3 for Figure 1 Cross-sectional view of the LCD module.
[0021] Figure 4 This is a schematic diagram of the structure of Example 2.
[0022] Figure 5 for Figure 4 Schematic diagram of the structure of the middle and upper polarizers.
[0023] Description of Figure Numbers:
[0024] Cover plate 100; LCD module 200; backlight module 300; black ink layer 1; indicator light pattern 2; pen segment area 3;
[0025] Upper polarizer 4; upper substrate 5; lower substrate 6; lower polarizer 7; PSA glue 41; iron frame 8; opaque conductive material 9;
[0026] TAC film 42; PVA polarizing film 43; lower TAC film 44. DETAILED DESCRIPTION
[0027] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.
[0028] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships 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 referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.
[0029] 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 the indicated technical features. Therefore, the features defined as "first", "second", and "third" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.
[0030] The utility model provides an instrument indicator light adopting LCD backlight, which comprises a cover plate, an LCD module and a backlight module, wherein a black ink layer is arranged on the lower surface of the cover plate, a plurality of indicator light patterns are arranged on the black ink layer, and each indicator light pattern avoids the black ink layer; the LCD module is arranged below the cover plate, a plurality of pen segment areas which can control whether light is transmitted are arranged in the LCD module, and the number and position of the pen segment areas correspond to the number and position of the indicator light patterns; the backlight module is arranged below the LCD module.
[0031] Since an LCD module is arranged above the backlight module, and a plurality of segments which can control whether light can pass through are arranged on the LCD module, when a segment on the LCD module is powered on, light can pass through the segment, and the indicator light pattern corresponding to the segment will be completely illuminated by the side backlight below, thereby realizing lighting up the corresponding indicator lights above by controlling the voltage of each segment of the LCD, and at least only one LED lamp can be used to realize lighting up of multiple instrument indicator lights, thereby simplifying the backlight design and saving structural space.
[0032] In order to enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings. The present invention is described in detail below in conjunction with the accompanying drawings and embodiments, and 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 with 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 limitations on the present invention.
[0033] See also Figures 1 to 3 , an instrument indicator light using LCD backlight provided by the utility model, comprising a cover plate 100, an LCD module 200 and a backlight module 300, a black ink layer 1 is provided on the lower surface of the cover plate 100, a plurality of indicator light patterns 2 are provided at the black ink layer 1, each indicator light pattern 2 avoids the black ink layer 1, that is, no black ink is provided at the indicator light pattern 2; the LCD module 200 is provided below the cover plate 100, a plurality of pen segment areas 3 for controlling whether light is transmitted are provided in the LCD module 200, and the number and position of the pen segment areas 3 correspond to the number and position of the indicator light patterns 2; the backlight module 300 is provided below the LCD module 200. Since the LCD module 200 is arranged above the backlight module 300, and the LCD module 200 is provided with a plurality of pen segment areas 3 which can control whether light can pass through, when a certain pen segment area 3 on the LCD module 200 is powered on and voltage is applied, light can pass through the pen segment area 3, and when a certain pen segment area 3 on the LCD module 200 is powered off and voltage is removed, light cannot pass through the pen segment area 3, and the indicator light pattern 2 corresponding to the pen segment area 3 will be completely illuminated or turned off by the side backlight below, thereby realizing lighting of the corresponding indicator lights above by controlling the voltage of each pen segment of the LCD, and at least only one LED lamp can be used to realize lighting of multiple instrument indicator lights, thereby simplifying the backlight design and saving structural space.
[0034] Furthermore, the pen segment area 3 completely covers the indicator light pattern 2, so that the indicator light pattern 2 can be completely illuminated.
[0035] Furthermore, an LED lamp is disposed in the backlight module 300 . There is at least one LED lamp, and a plurality of LED lamps may be disposed according to actual needs under the limitation of brightness and compact layout.
[0036] Furthermore, the cover plate 100 and the non-display area of the LCD module 200 are fixed by double-sided adhesive.
[0037] Furthermore, there are eight indicator light patterns 2, and the eight indicator light patterns 2 are arranged in two rows and distributed in sequence.
[0038] Furthermore, each indicator light pattern 2 is screen-printed with semi-transparent black ink, so that the cover plate 100 can achieve an integral black effect when not lit.
[0039] See also Figure 4 and Figure 5 As a further optimization scheme of Example 1, in this embodiment, the LCD module 200 includes an upper polarizer 4, an upper substrate 5, a lower substrate 6 and a lower polarizer 7 which are arranged in sequence from top to bottom, and the contact surface of the upper polarizer 4 and the upper substrate 5 is provided with a PSA glue 41; the backlight module 300 is provided with an iron frame 8, and the iron frame 8 is provided with a grounding area; the outer edges of the LCD module 200 and the backlight module 300 are provided with an opaque conductive material 9, one end of the opaque conductive material 9 extends to the iron frame 8 and wraps a part of the iron frame 8, and the other end thereof extends to the PSA glue 41 and is connected to the PSA glue 41. Since one end of the opaque conductive material 9 extends to the iron frame 8 and wraps part of the iron frame 8, and the other end thereof extends to the PSA glue 41 and is connected to the PSA glue 41, the static electricity in the PSA glue 41 of the upper polarizer 4 can be discharged through the grounding area of the iron frame 8. At the same time, due to the opaque property of the opaque conductive material 9, backlight leakage can be avoided. There is no need to use conductive silver paste, which will not corrode the polarizer and avoid poor display area. At the same time, there is no need to use shading paper, and only one opaque conductive material 9 is needed, which reduces equipment and manufacturing costs and improves product competitiveness.
[0040] Furthermore, the material of the light-proof conductive material 9 is copper foil or aluminum foil, which is light-proof and conductive.
[0041] Furthermore, a cover plate 100 is disposed above the upper polarizer 4, and the other end of the opaque conductive material 9 extends to the cover plate 100 and exceeds the cover plate 100 by 0.1 mm-0.2 mm, so that the IR hole can also be shielded to prevent backlight from leaking to the IR hole.
[0042] Furthermore, the upper polarizer 4 includes an upper TAC film 42 , a PVA polarizing film 43 , a lower TAC film 44 and a PSA adhesive 41 which are sequentially arranged from top to bottom.
[0043] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0044] Obviously, the embodiments described above are only some embodiments of the present application, rather than all embodiments. The preferred embodiments of the present application are given in the accompanying drawings, but they do not limit the patent scope of the present application. The present application can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present application more thorough and comprehensive. Although the present application is described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions recorded in the aforementioned specific implementation methods, or to perform equivalent replacement of some of the technical features therein. Any equivalent structure made using the contents of the specification and drawings of this application, directly or indirectly used in other related technical fields, is similarly within the scope of patent protection of this application.
Claims
1. An instrument indicator light using LCD backlight, characterized in that: It includes: A cover plate, a black ink layer is provided on the lower surface thereof, a plurality of indicator light patterns are provided on the black ink layer, and each indicator light pattern avoids the black ink layer; An LCD module is disposed below the cover plate, wherein a plurality of segments are disposed in the LCD module for controlling whether light is transmitted, and the number and position of the segments correspond to the number and position of the indicator light patterns; The backlight module is arranged below the LCD module.
2. The instrument indicator light using LCD backlight according to claim 1, characterized in that: The pen segment area completely covers the indicator light pattern.
3. The instrument indicator light using LCD backlight according to claim 1, characterized in that: The backlight module is provided with an LED lamp, and there is at least one LED lamp.
4. The instrument indicator light using LCD backlight according to claim 3, characterized in that: The cover plate is fixed to the non-display area of the LCD module by double-sided adhesive.
5. The instrument indicator light using LCD backlight according to claim 1, characterized in that: There are eight indicator light patterns, and the eight indicator light patterns are arranged in two rows and distributed in sequence.
6. The instrument indicator light using LCD backlight according to claim 1, characterized in that: Each of the indicator light patterns is silk-screened with semi-transparent black ink.
7. The instrument indicator light using LCD backlight according to claim 1, characterized in that: The LCD module includes an upper polarizer, an upper substrate, a lower substrate and a lower polarizer which are arranged in sequence from top to bottom, the contact surface of the upper polarizer and the upper substrate is provided with PSA glue, the backlight module is provided with an iron frame, the iron frame is provided with a grounding area, the outer edges of the LCD module and the backlight module are provided with opaque conductive material, one end of the opaque conductive material extends to the iron frame and wraps a part of the iron frame, and the other end of the opaque conductive material extends to the PSA glue and is connected to the PSA glue.
8. The instrument indicator light using LCD backlight according to claim 7, characterized in that: The material of the light-proof conductive material is copper foil or aluminum foil.
9. The instrument indicator light using LCD backlight according to claim 7, characterized in that: The other end of the light-proof conductive material extends to the cover plate and exceeds the cover plate by 0.1 mm-0.2 mm.
10. The instrument indicator light using LCD backlight according to claim 7, characterized in that: The upper polarizer includes an upper TAC film, a PVA polarizing film, a lower TAC film and a PSA adhesive which are sequentially arranged from top to bottom.