CN115938843A - Backlight Control System - Google Patents
Backlight Control System Download PDFInfo
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- CN115938843A CN115938843A CN202110931036.1A CN202110931036A CN115938843A CN 115938843 A CN115938843 A CN 115938843A CN 202110931036 A CN202110931036 A CN 202110931036A CN 115938843 A CN115938843 A CN 115938843A
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- light
- control system
- light guide
- circuit board
- backlight control
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Abstract
The present invention provides a backlight control system, comprising: keyboard device and computer. The keyboard device includes: the light guide module comprises a fixed lamp piece, a movable lamp piece, a light guide module and a key module; the computer has a processing unit. The movable lamp sheet is detachably and electrically connected to the fixed lamp sheet, the fixed lamp sheet can project first light rays to the keys of the key module through the light guide module, and the processing unit can drive the movable lamp sheet to project second light rays to the special keys of the key module in the situation mode.
Description
Technical Field
The present disclosure relates to light source control systems, and particularly to a backlight control system for an input device.
Background
In the modern society, the use of electronic products has become an indispensable part of life, such as food, clothes, live, walk, breed and music, and each is related to electronic products. Generally, a keyboard is configured in a consumer electronic product, and in order to enhance the practicability of the keyboard, a backlight module is often disposed inside the keyboard. The backlight module can project the generated light to the keys, so that a user can operate the keyboard in a dim environment; on the other hand, the backlight module can also be used for executing the function of keyboard prompt.
In the prior art, the backlight source of the keyboard can be roughly divided into a film-type backlight module and an in-lamp type module. The keyboard with the film type backlight module can only generate a single luminous visual effect generally, and can not control the single key to emit light, and only all keys can emit light and dim at the same time; compared with the film backlight module, the keypad with the in-light module can make the keys exhibit various light effect combinations, but the price is usually relatively expensive.
Therefore, how to generate various light effect combinations for the keyboard with the film type backlight module is a technical subject to be solved by the invention.
Disclosure of Invention
The main objective of the present invention is to provide a backlight control system applied to a film backlight module, which can make a keyboard generate various light effect combinations, so that a user can quickly identify and use special keys of the keyboard device in different situation modes.
To achieve the aforesaid objective, the present invention provides a backlight control system, comprising:
a keyboard apparatus, comprising:
the fixed lamp sheet is provided with a fixed circuit board and a plurality of first light-emitting units arranged on the fixed circuit board;
the movable lamp sheet is provided with an extension circuit board and a second light-emitting unit arranged on the extension circuit board, and the extension circuit board is detachably and electrically connected with the fixed circuit board;
the light guide module is arranged on the fixed lamp piece and the movable lamp piece;
the key module is arranged above the light guide module and is provided with a plurality of keys; and
the computer is provided with a processing unit which is electrically connected with the fixed circuit board and controls the movable lamp piece through the fixed circuit board;
the first light-emitting unit projects first light to the keys through the light guide module, and the processing unit drives the second light-emitting unit to project second light to special keys of the keys in the situation mode.
In the above preferred embodiment, the contextual model comprises: starting a numeric keyboard function, starting a shortcut key function, starting an Fn key function, starting an alphabet case shift key function, or starting a numeric lock key function.
In the above preferred embodiment, the key module includes a metal plate structure, the metal plate structure is disposed below the key and has a plurality of light-emitting openings, and the light-emitting openings correspond to the key.
In the above preferred embodiment, the light guide module includes:
a light guide plate;
a light reflecting layer disposed below the light guide plate;
a light transmission layer arranged on the light guide plate; and
the light reflecting microstructures are arranged between the light guide plate and the light reflecting layer;
the light reflecting microstructures are respectively corresponding to the light emergent openings.
In the above preferred embodiment, the fixed lamp sheet is disposed in the side edge region of the light guide module, and the first light emitting unit emits the first light toward the side wall surface or the bottom surface of the light guide plate, and the first light is transmitted in the light guide plate, and then reflected by the light reflecting microstructure, passes through the light transmissive layer and the light emitting opening, and is projected to the key.
In the above preferred embodiment, the light guide plate has a through opening, the through opening corresponds to the special key, and the second light emitting unit is disposed in the through opening.
In the above preferred embodiment, the second light-emitting unit is in a forward light-emitting mode, and can project the second light toward the special key.
In the above preferred embodiment, the inner wall surface of the through opening is provided with the light leakage preventing structure.
In the above preferred embodiment, the second light emitting unit is in a side light emitting mode, and can project a second light toward the inner wall surface of the through opening, the second light is transmitted in the light guide plate, and then is reflected by the light reflecting microstructure, passes through the light transmitting layer and the light emitting opening, and projects the special key.
In the above preferred embodiment, the light leakage preventing structure is disposed on one side of the inner wall surface of the through opening, and the second light emitting unit projects the second light toward the side where the light leakage preventing structure is not disposed.
In the above preferred embodiment, the light-reflecting layer includes light-incident openings, the second light-emitting unit is in a forward light-emitting mode and disposed in the light-incident openings, and can project second light toward the bottom surface of the light guide plate, and the second light is transmitted in the light guide plate, and then reflected by the light-reflecting microstructures, passes through the light-transmitting layer and the light-exit openings, and is projected to the special key.
In the above preferred embodiment, the fixed circuit board has a universal input/output interface, and the processing unit is electrically connected to the universal input/output interface, so as to control the fixed lamp strip and the movable lamp strip.
In the above preferred embodiment, the fixed circuit board has a movable interface, and the extended circuit board is detachably connected to the movable interface.
The invention has the beneficial effect that the backlight source of the keyboard device comprises a fixed lamp piece and a detachable movable lamp piece. The detachable movable lamp sheet can be selected and matched by manufacturers or users, so that the detachable movable lamp sheet is differentiated from similar products, and the identification degree and uniqueness of the products can be improved. On the other hand, the processing unit of the computer can drive the movable lamp piece to project the second light to the special keys through the fixed lamp piece in the special situation mode, so that the special keys generate different luminous visual effects, and a user can quickly identify and use different special keys in different situation modes.
Drawings
FIG. 1: the backlight control system provided by the invention;
FIG. 2A: is a schematic perspective view of the keyboard apparatus provided by the present invention;
FIG. 2B: is a three-dimensional exploded view of the keyboard device provided by the invention;
FIG. 3: a top perspective view of a keyboard apparatus provided by the present invention;
FIG. 4A: base:Sub>A cross-sectional view of the first embodiment of the keyboard apparatus of fig. 3 taken along linebase:Sub>A-base:Sub>A';
FIG. 4B: base:Sub>A cross-sectional view of the second embodiment of the keyboard assembly of fig. 3 taken along linebase:Sub>A-base:Sub>A'; and
FIG. 4C: base:Sub>A cross-sectional view of the third embodiment of the keyboard apparatus of fig. 3 taken along linebase:Sub>A-base:Sub>A'.
[ List of reference numerals ]
L1: the first light ray
L2: the second light ray
I. II, III: region(s)
1: backlight control system
10: computer with a memory card
11: processing unit
20: keyboard device
21: key module
211: push-button
2111: general push-button
2112: special key
212: metal plate structure
2121: light-emitting opening
22: fixed lamp sheet
221: fixed circuit board
222: first light emitting unit
223: universal input/output interface
224: movable interface
23: movable lamp sheet
231: extended circuit board
232: second light emitting unit
24: light guide module
241: light guide plate
2411: light reflecting microstructure
242: light reflecting layer
2421: incident light opening
243: light-transmitting layer
244: through opening
245: light leakage prevention structure
25: shell body
251: upper cover
2511: key opening
252: lower cover
30: display device
Detailed Description
The advantages and features of the invention and methods of accomplishing the same may be understood more readily by reference to the following detailed description of exemplary embodiments and the accompanying drawings. This invention may, however, be embodied in different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
First, referring to fig. 1, fig. 1 is a diagram illustrating a backlight control system according to the present invention. The backlight control system 1 includes: a computer 10, a keyboard device 20, and a display device 30. The computer 10 has a processing unit 11. The keyboard apparatus 20 includes: a key module 21, a fixed lamp sheet 22, a movable lamp sheet 23 and a light guide module 24. Wherein, the fixed lamp sheet 21 is electrically connected with the movable lamp sheet 23; the processing unit 11 is electrically connected to the fixed lamp slice 21. The fixed light sheet 22 can project light of a certain color tone to the key module 21 through the light guide module 24, so that all the keys generate a luminous visual effect. On the other hand, in the special situation mode, the processing unit 11 can drive the movable light sheet 23 through the fixed light sheet 21 to project light of another color tone to the special keys in the key module 21, so that the special keys generate different luminous visual effects. The contextual mode may include: a numeric keypad function is started, a shortcut key function is started, an Fn key function is started, an alphabet case shift key (capslock) function is started, or a number lock key (number lock) function is started. The display device 30 is used for displaying the control image of the computer 10.
Referring to fig. 2A and 2B, fig. 2A is a schematic perspective view of a keyboard device according to the present invention; fig. 2B is an exploded perspective view of the keyboard apparatus provided in the present invention. The keyboard apparatus 20 includes: a key module 21, a fixed lamp sheet 22, a movable lamp sheet 23, a light guide module 24 and a casing 25.
The fixed lamp sheet 22 includes: a fixed circuit board 221, a plurality of first light emitting units 222 disposed on the fixed circuit board 221, a general purpose input/output (GPIO) interface 223, and a movable interface 224; the movable lamp sheet 23 includes: the extension circuit board 231 and the second light emitting unit 232 disposed on the extension circuit board 231, and the extension circuit board 231 is detachably connected to the movable interface 224 and electrically connected to the fixed circuit board 221. Although the embodiment of using the movable interface 224 to connect the extension circuit board 231 is only mentioned in the present embodiment, in practical applications, the circuit of the extension circuit board 231 and the circuit of the fixed circuit board 221 may be connected by soldering, and the embodiment is not limited thereto.
The fixed circuit board 221 and the extended circuit board 231 may be flexible printed circuit boards (FPCs), hard circuit boards (RPCs), or a combination thereof; the first light emitting unit 222 and the second light emitting unit 232 may be: a Light Emitting Diode (LED) chip, an Organic Light Emitting Diode (OLED) chip, or an Electro Luminescence (EL) chip. In the present embodiment, the keyboard device 20 is configured with a fixed light sheet 22 and two detachable movable light sheets 23.
The processing unit 11 (as shown in fig. 1) is electrically connected to the general input/output interface 223 of the fixed circuit board 221, so that the fixed lamp sheet 22 can be controlled by the processing unit, and the movable lamp sheet 23 can be controlled by the fixed circuit board 221.
The light guide module 24 is disposed on the fixed lamp sheet 22 and the movable lamp sheet 23; the key module 21 is disposed above the light guide module 24 and has a plurality of keys 211. The keys 211 include general keys 2111 and special keys 2112.
The housing 25 is used for accommodating the key module 21, the fixed lamp piece 22, the movable lamp piece 23 and the light guide module 24, and includes an upper cover 251 and a lower cover 252 which can be combined with each other, and the upper cover 251 has a plurality of key openings 2511 corresponding to the positions of the keys 211. After the housing 25 is assembled, the key 211 is exposed or partially inserted into the key opening 2511 of the upper cover 251 for the user to press.
Referring to fig. 3 and 4A, fig. 3 is a top perspective view of a keyboard apparatus provided in the present invention; fig. 4A isbase:Sub>A cross-sectional view of the first embodiment of the keyboard apparatus of fig. 3 taken along linebase:Sub>A-base:Sub>A'. First, it is to be noted that fig. 4A omits a support structure of the aforementioned key module 21. In fig. 3, the fixed lamp pieces 22 are disposed in the side edge region of the light guide module 24; the two movable light sheets 23 extend toward the central region of the light guide module 24 and the other side edge region opposite to the fixed light sheet 22. In fig. 4A, the special key 2112 is a shortcut key, for example: opening the mail, opening the home page, opening/closing the computer, adjusting the volume or the computer, etc., a metal plate structure 212 is disposed below the mail, and the metal plate structure 212 has a plurality of light-emitting openings 2121 for limiting the light-emitting position, and each light-emitting opening 2121 is disposed corresponding to each key 211.
The light guide module 24 includes: a light guide plate 241, a light reflecting layer 242, and a light transmitting layer 243. Wherein, the reflective layer 242 is disposed under the light guide plate 241; the transparent layer 243 is disposed on the light guide plate 241, and a plurality of reflective microstructures 2411 are disposed between the light guide plate 241 and the reflective layer 242, and the reflective microstructures 2411 respectively correspond to the light exit openings 2121 of the metal plate structure 212. In the embodiment, the light reflecting microstructures 2411 are formed on the lower surface of the light guide plate 241. On the other hand, the light guide plate 241 has a through opening 244, and the through opening 244 corresponds to the special key 2112. In the present embodiment, the second light emitting unit 232 is in a forward light emitting mode (Top view), and a light leakage preventing structure 245 is disposed around an inner wall surface of the through opening 244.
Referring to fig. 3 and fig. 4A, in a normal use state of the keyboard device 20, the first light-emitting unit 222 of the fixed lamp sheet 22 emits a first light L1 toward the side wall surface or the bottom surface of the light guide plate 241. The first light L1 is transmitted in the light guide plate 241, then reflected by the light-reflecting microstructures 2411, and passes through the light-transmitting layer 243 and the light-emitting openings 2121 to be projected to all the keys 211. When the user switches the keyboard apparatus 20 to a special situation mode, for example: when the shortcut key function is activated, the processing unit 11 may drive the movable light sheet 23 via the fixed light sheet 21, so that the second light emitting unit 232 projects a second light L2 with a color different from the first light L1 upward to the special key 2112, so that the special key 2112 generates a visual effect of emitting light different from other general keys 2111. Thus, the user can recognize the special key 2112 in real time, for example: the location of the shortcut key, and the special key 2112 can be used quickly and conveniently. Although the embodiment in which the light leakage preventing structure 245 is disposed around the inner wall surface of the through opening 244 is merely provided in the present embodiment, the light leakage preventing structure 245 may not be provided in practical applications.
Referring to fig. 3 and 4B, fig. 4B isbase:Sub>A cross-sectional view of the keyboard apparatus of fig. 3 taken along linebase:Sub>A-base:Sub>A' according to the second embodiment. In the second embodiment, the functions and operation of the elements are the same as those of the first embodiment, and thus are not described herein again. The difference is that the light leakage preventing structure 245 divides the light guide plate 241 into three regions I, II, and III, and one side of the inner wall surface of the through opening 244 located in the second region of the light guide plate 241 includes a portion of the light leakage preventing structure 245. In the present embodiment, the second light-emitting unit 232 is in a Side view mode (Side view), and in a special situation mode, the second light-emitting unit 232 projects the second light L2 toward a Side where the light leakage preventing structure 245 is not disposed. The second light L2 is transmitted in the second region II of the light guide plate 241, and then is reflected by the light-reflecting microstructures 2411 and passes through the light-transmitting layer 243 and the light-emitting openings 2121 to project the special keys 2112, so that the special keys 2112 generate a luminous visual effect different from other common keys 2111. In this embodiment, although the embodiment in which the light leakage preventing structure 245 is provided on the inner wall surface side of the through opening 244 is only proposed, the light leakage preventing structure 245 may not be provided in practical use.
Referring to fig. 3 and 4C, fig. 4C isbase:Sub>A cross-sectional view of the keyboard apparatus of fig. 3 taken along linebase:Sub>A-base:Sub>A' according tobase:Sub>A third embodiment. In the third embodiment, the functions and operation of the elements are the same as those of the first embodiment, and thus the description thereof is omitted. The difference is that the light guide plate 241 in this embodiment is not provided with the through opening 244 and the light leakage prevention structure 245. On the other hand, the light reflecting layer 242 is provided with a light inlet opening 2421, and the second light emitting unit 232 is disposed in the light inlet opening 2421. The second light emitting unit 232 is in a forward light emitting mode, and can project a second light L2 toward the bottom surface of the light guide plate 241. The second light enters the light guide plate 241 and is transmitted in the light guide plate 241, and then is reflected by the light reflecting microstructures 2411, passes through the light transmitting layer 243 and the light emitting openings 2121, and is projected to the special keys 2112, so that the special keys 2112 generate a light emitting visual effect different from other common keys 2111.
Compared with the prior art, the backlight control system provided by the invention has the advantages that the backlight source of the keyboard device comprises the fixed lamp sheet and the detachable movable lamp sheet. The detachable movable lamp sheet can be selected and matched by manufacturers or users, so that the detachable movable lamp sheet is differentiated from similar products, and the identification degree and uniqueness of the products can be improved. On the other hand, the processing unit of the computer can drive the movable light sheet to project the second light to the special keys through the fixed light sheet in a special situation mode, so that a user can quickly identify and use the special keys in different situation modes, and the design not only improves the functionality of the keyboard device, but also enables the user to obtain good use experience; therefore, the present invention is an invention with great industrial value.
The present invention may be modified in various ways by anyone skilled in the art without departing from the scope of the appended claims.
Claims (13)
1. A backlight control system, comprising:
a keyboard apparatus, comprising:
the fixed lamp sheet is provided with a fixed circuit board and a plurality of first light-emitting units arranged on the fixed circuit board;
at least one movable lamp sheet, which is provided with an extension circuit board and at least one second light-emitting unit arranged on the extension circuit board, and the extension circuit board can be detachably and electrically connected with the fixed circuit board;
a light guide module arranged on the fixed lamp sheet and the at least one movable lamp sheet;
the key module is arranged above the light guide module and is provided with a plurality of keys; and
a computer having a processing unit electrically connected to the fixed circuit board and controlling the at least one movable lamp sheet via the fixed circuit board;
the processing unit drives the second light-emitting units to project a second light to at least one special key in the keys in a situation mode.
2. The backlight control system of claim 1, wherein the contextual mode comprises: starting a numeric keyboard function, starting a shortcut key function, starting an Fn key function, starting an alphabet case shift key function or starting a number lock key function.
3. The backlight control system of claim 1, wherein the key module comprises a metal plate structure disposed under the plurality of keys and having a plurality of light-emitting openings corresponding to the plurality of keys.
4. The backlight control system of claim 3, wherein the light guide module comprises:
a light guide plate;
a light reflecting layer arranged below the light guide plate;
a light transmission layer arranged on the light guide plate; and
the light reflecting microstructures are arranged between the light guide plate and the light reflecting layer;
the light reflecting microstructures are respectively corresponding to the light emergent openings.
5. The backlight control system as claimed in claim 4, wherein the fixed lamp sheet is disposed at a side edge region of the light guide module, and the first light emitting units emit the first light toward a side wall surface or a bottom surface of the light guide plate, the first light being transmitted in the light guide plate and then reflected by the reflective microstructures and projected to the keys through the light transmissive layer and the light emitting openings.
6. The backlight control system according to claim 4, wherein the light guide plate has at least one through opening corresponding to the at least one special key, and the at least one second light-emitting unit is disposed in the at least one through opening.
7. The backlight control system of claim 6, wherein the at least one second light unit is in a forward lighting mode capable of projecting the second light toward the at least one special key.
8. The backlight control system of claim 7, wherein an inner wall surface of the at least one through opening is surrounded by a light leakage preventing structure.
9. The backlight control system of claim 6, wherein the at least one second light-emitting unit is in a side-view mode capable of projecting the second light toward an inner wall of the at least one through opening, the second light being transmitted in the light guide plate and then reflected by the plurality of reflective microstructures and projected to the at least one special key through the light-transmissive layer and the plurality of light-exit openings.
10. The backlight control system of claim 9, wherein a light leakage preventing structure is disposed on a side of an inner wall surface of the at least one through opening, and the at least one second light emitting unit projects the second light toward a side where the light leakage preventing structure is not disposed.
11. The backlight control system of claim 4, wherein the reflective layer comprises at least one light-incident opening, the at least one second light-emitting unit is in a forward light-emitting mode and disposed in the at least one light-incident opening to project the second light toward the bottom surface of the light guide plate, the second light is transmitted in the light guide plate, and then reflected by the plurality of reflective microstructures and projected to the at least one special key through the light-transmissive layer and the plurality of light-emitting openings.
12. The backlight control system of claim 1, wherein the fixed circuit board has a universal input/output interface, and the processing unit is electrically connected to the universal input/output interface to control the fixed lamp sheet and the at least one movable lamp sheet.
13. The backlight control system of claim 1, wherein the fixed circuit board has at least one movable interface, and the extended circuit board is detachably connected to the at least one movable interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110931036.1A CN115938843A (en) | 2021-08-13 | 2021-08-13 | Backlight Control System |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110931036.1A CN115938843A (en) | 2021-08-13 | 2021-08-13 | Backlight Control System |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115938843A true CN115938843A (en) | 2023-04-07 |
Family
ID=86551100
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110931036.1A Pending CN115938843A (en) | 2021-08-13 | 2021-08-13 | Backlight Control System |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115938843A (en) |
-
2021
- 2021-08-13 CN CN202110931036.1A patent/CN115938843A/en active Pending
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