CN101419347A - Lcd - Google Patents
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- CN101419347A CN101419347A CNA2007101241607A CN200710124160A CN101419347A CN 101419347 A CN101419347 A CN 101419347A CN A2007101241607 A CNA2007101241607 A CN A2007101241607A CN 200710124160 A CN200710124160 A CN 200710124160A CN 101419347 A CN101419347 A CN 101419347A
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- backlight
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Abstract
An LCD comprises a backlight source containing at least one color, an LCD module and a display drive circuit. The LCD module comprises N character/graphics display sections and a background section; the display drive circuit comprises a character/graphics drive circuit, a background section drive circuit and a backlight source drive circuit; at any time, when the character/graphics drive circuit activates M display sections in the N character/graphics display sections to be in a first state, the background section drive circuit and the character/graphics drive circuit simultaneously activate the background section and the rest N-M display sections in the character/graphics display sections to be in a second state, and one of the first state and the second state is transparent. The LCD with a plurality of display modes can realize changes between a positive display form and a negative display form and changes of backlight colors combined with the display form according to an external command, thus realizing the display of a plurality of colors and different forms at a low cost.
Description
Technical field
The present invention relates to LCD, more particularly, relate to a kind of LCD with plurality of display modes.
Background technology
In the prior art, monochromatic liquid crystal display generally adopts positive display mode (also white gravoply, with black engraved characters) to show, and generally all only is equipped with a backlight.For example, liquid crystal display clock great majority in the market all are positive display mode, and when ambient light was more weak, it was then relatively more difficult to want to see clearly writing, needs manually opened backlight just can see clearly.In addition, owing to have only a kind of backlight of color, when the user need indicate various information with different colours backlight, can't satisfy this demand of user.
Therefore there is the single defective of display mode in the monochromatic liquid crystal display of prior art, can't provide abundanter, more can satisfy the display mode of specific demand for the user.
Summary of the invention
The technical problem to be solved in the present invention is, at the single defective of the liquid crystal display displays pattern of above-mentioned prior art, provides a kind of LCD with plurality of display modes.
The technical solution adopted for the present invention to solve the technical problems is: constructs a kind of LCD, comprises backlight, LCD module and display driver circuit, wherein:
Described backlight comprises the light source of at least a color;
Described LCD module comprises N characters/graphics display block and a background section;
Described display driver circuit comprises the characters/graphics driving circuit that is used for controlling described N each display block state of characters/graphics display block, the background area segment drive circuit that is used to control described background section state, and the backlight source driving circuit that is used to control described backlight duty;
Wherein, at any one time, when described characters/graphics driving circuit activates into first state with M display block in described N the characters/graphics display block, described background area segment drive circuit and described characters/graphics driving circuit activate into second state with a remaining N-M display block in described background section and described N the characters/graphics display block simultaneously, and to have a kind of in first and second states be printing opacity.
In LCD of the present invention, described display driver circuit is connected with the trigger pip generation unit and display mode is selected and control module, wherein said display mode is selected and control module is used for according to the corresponding display mode of the output signal selection of described trigger pip generation unit, and send the information of selected display mode to described characters/graphics driving circuit, background area segment drive circuit and backlight source driving circuit, to control the operation of described characters/graphics driving circuit, background area segment drive circuit and backlight source driving circuit.
In LCD of the present invention, described background section is made up of the zonule of a plurality of mutual electrical connections on the LCD display plane.
In LCD of the present invention, described trigger pip generation unit comprises clock module, is used for selecting display mode according to the time period parameter.
In LCD of the present invention, described trigger pip generation unit comprises the surround lighting detection module, is used for selecting corresponding display mode according to the surround lighting parameter.
In LCD of the present invention, described trigger pip generation unit comprises the environment temperature detection module, is used for selecting display mode according to the environment temperature parameter.
In LCD of the present invention, described trigger pip generation unit comprises the user interface circuit that is used to receive user instruction, enables the Instruction Selection display mode according to the user.
In LCD of the present invention, described display driver circuit is connected with storer or external memory interface circuit.
In LCD of the present invention, store games or ad content in the described storer.
In LCD of the present invention, described backlight comprises the first kind of color being controlled by backlight source driving circuit and the backlight of second color, and at least one sees through the liquid crystal display district that is in light transmission state two kinds of backlights.
Implement LCD of the present invention, have following beneficial effect: can select plurality of display modes as required, to satisfy the user uses LCD under multiple condition different demands.For example, according to display of the present invention, but the demonstration of the common white gravoply, with black engraved characters under the display backlight off position, also may command character partial switching, by being equipped with 2 kinds or above backlight, can realize the character demonstration of redness or green or other colors, thereby can realize the characters/graphics demonstration of many colors at low cost, provide support for creating panoramic application product.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples, in the accompanying drawing:
Figure 1A is the structural representation of the LCD according to the present invention;
Figure 1B is the characters/graphics display block of LCD module in one embodiment of the invention and the synoptic diagram of background section;
Fig. 2 A is the positive display mode synoptic diagram according to the embodiment of the invention;
Fig. 2 B is the negative display mode synoptic diagram according to the embodiment of the invention;
Fig. 3 A-3C is the electrode connection layout during LCD module character display according to an embodiment of the invention;
Fig. 4 is the circuit theory diagrams of LCD according to an embodiment of the invention;
Fig. 5 shows the control synoptic diagram according to an embodiment of the invention;
Fig. 6 shows the control synoptic diagram according to another embodiment of the present invention.
Embodiment
Shown in Figure 1A, in LCD of the present invention, comprise backlight 10, LCD module 20 and display driver circuit 30.Wherein, display driver circuit 30 comprises characters/graphics driving circuit 31, background area segment drive circuit 32, backlight source driving circuit 33 and display mode selection and control module 36.At the LCD duration of work, display driver circuit 30 can be as required and/or parameter preset control the displaying contents and the display mode of LCD module 20, comprise the duty of positive display mode, negative display mode and backlight.
Backlight 10 among Figure 1A can comprise a backlight, two backlights or more a plurality of backlight, and these backlights can be the backlights of various different colours, as red, green, blue or other color.
Among Figure 1A, display driver circuit 30 also is connected with clock circuit 41, light intensity testing circuit 42, temperature sensing circuit 43, user interface circuit 44, storer 51 and external memory interface circuit 52.The effect of these modules will be described hereinafter.
Shown in Figure 1B, in illustrative liquid crystal display of the present invention, LCD module 20 includes a plurality of characters/graphics display blocks 21 and a background section 22.For ease of describing, the quantity of supposing alphabet/graphic presentation section 21 is N.The shape of this N characters/graphics display block 21 can be carried out different designs according to the product difference of using, and makes it become the required whole elements of displaying contents.Each section in above-mentioned N characters/graphics display block 21 and background section 22 are connected respectively to corresponding electrode, these electrodes link to each other with the output terminal of characters/graphics driving circuit 31, background area segment drive circuit 32 respectively again, about this point can be referring to Fig. 3 A-3C and Fig. 4 and associated description.What need to propose is, whole background section can be made of the many zonules on the LCD display plane, and these zonules that constitute whole background section all are electrically connected, and whenever drive with same signal, so be referred to as the background section.
Fig. 2 A shows the duty of the LCD module shown in Figure 1B under positive display mode: alphabet/graphic presentation section 21 shows normally that all background section 22 does not show.
Fig. 2 B shows the duty of the LCD module shown in Figure 1B under negative display mode: alphabet/graphic presentation section 21 does not show that background section 22 shows.
It should be noted that, be a kind of extreme state shown in Fig. 2 A and Fig. 2 B.In operate as normal, when being operated in positive display mode, may only need M characters/graphics display block 21 to show in N the characters/graphics display block 21, and remaining N-M characters/graphics display block and background section 22 do not show, thereby demonstrate required content.Corresponding to same displaying contents, when being operated in negative display mode, then opposite: 21 demonstrations of background section 22 an and above-mentioned N-M characters/graphics display block, and above-mentioned M characters/graphics display block 21 do not show.In addition, it should be noted that under positive display mode, content displayed (as numeral, literal, figure etc.) is located light tight, and the background printing opacity; And under negative display mode, content displayed place printing opacity, and background is light tight.
In Fig. 3 A, as previously mentioned, each section and background section 22 in N characters/graphics display block 21 are connected with corresponding electrode respectively.Shown in Fig. 3 B, when needing to show " 7 " this numeral under positive display mode, display driver circuit 30 is C2, C3, S3, S4 power supply, and remaining electrode is not all powered.And when showing " 7 " this numeral under negative display mode (as Fig. 3 C), display driver circuit 30 is the electrode power supply except that C2, C3, S3, S4, and electrode C2, C3, S3, S4 do not power.
As shown in Figure 4, in one embodiment of the invention, display driver circuit is made of TM8726 type IC chip and peripheral circuit thereof.By C3 and S30 output terminal background section 22 is controlled, N characters/graphics display block controlled by C1-C3 and S1-S41 output terminal.By COM6-COM9 backlight is controlled in addition.Also show the clock generation circuit that links to each other with display driver circuit, temperature sensing circuit, light intensity testing circuit, user interface circuit etc. among Fig. 4.As an embodiment, under " positive display mode " (white background black stroke), can be S30, C3 background: do not light, be the original white of LCD; S1 ~ S41, C1 ~ C3 stroke: light up black.And " anti-display mode " (black background white stroke) S30, C3 background: light up black; S1 ~ S41, C1 ~ C3 stroke: do not light, be the original white of LCD.
Fig. 5 shows the synoptic diagram of LCD (circuit as shown in Figure 4) display mode control according to an embodiment of the invention.As shown in Figure 5, after step 510 powers on or resets, enter normal displaying mode (being positive display mode) in step 520.Three branches are below arranged.First branch: in step 532, when the user by user interface (being the user interface circuit 44 shown in Figure 1A), as button (being to press the SNOOZE/LIGHT key once in the present embodiment), when display mode is cracked down upon evil forces in selection, enter the display mode of cracking down upon evil forces (promptly negative display mode) in step 542, and after 5 seconds, automatically return to positive display mode.Second branch: in step 534, when the time of system clock (providing as the clock circuit among Figure 1A 41) indication arrives the start time of predefined noctilucence period, display driver circuit drives the LCD module and enters the display mode of cracking down upon evil forces (promptly negative display mode) and light backlightly in step 544, automatically return to positive display mode after the time that sets by noctilucence (as 6-10 hour) afterwards.The 3rd branch controls to enter or withdraw from the display mode (promptly negative display mode) of cracking down upon evil forces manually.In step 536, when the user pins predetermined button (being the SNOOZE/LIGHT key in as present embodiment) after the regular hour (as 8 seconds), display driver circuit drives the LCD module and enters the display mode of cracking down upon evil forces (promptly negative display mode) and light backlightly in step 546, rest on negative display mode afterwards.When pinning predetermined button (being the SNOOZE/LIGHT key in as present embodiment) once more, the user after the regular hour (as 8 seconds), turns back to positive display mode.
Fig. 6 shows the synoptic diagram of liquid crystal display displays pattern control according to another embodiment of the present invention.As shown in the figure, after step 610 powers on or resets, enter determining step 620, confirm whether be Sun..In this way, then enter step 632 and switch to red backlight mode, and backlight at step 652 shiny red; Otherwise enter step 634, then switch to green (or blue or other color) backlight mode, and in step 654 bright green or blue or other color is backlight.And in step 662 and step 664, judge whether to be Sun. once more respectively at 12:00AM every day (being 0:00 in morning).Shown in step 642 among Fig. 6 and 644, can also directly carry out switching controls by user interface and system clock information to backlight.
Except that above-mentioned display mode was selected control mode, as selection, multi-mode LCD of the present invention also can be designed to be able to select different display modes according to ambient light intensity, environment temperature.In this case, need light intensity testing circuit 42, temperature sensing circuit 43 shown in Figure 1A cooperate to come testing environment light intensity, environment temperature, and send testing result to display mode selection and control module 36.Select suitable display mode by the latter according to detecting data, and the information of selected display mode is sent to characters/graphics driving circuit 31, background area segment drive circuit 32 and backlight source driving circuit 33, with the operation of control character/graphics driver circuit 31, background area segment drive circuit 32 and backlight source driving circuit 33.As when extraneous light is strong, can be without backlight.And when extraneous light is more weak, can use backlight.And for example shown in Figure 6, the different dates is used the backlight of different colours, as selecting red backlight Sun. for use, selects other colour backlight source Monday to Saturday for use.For another example, when environment temperature was higher or lower than predetermined temperature, the backlight that can light certain color was with the announcement of warning.
In addition, as previously mentioned, display driver circuit 30 also is connected with storer 51 and external memory interface circuit 52.Can store games, ad content information in these storeies, can access and on display screen, show when needing.
The backlight of optional 2 kinds of colors is controlled by backlight source driving circuit, make two kinds of backlights at least one see through the liquid crystal display district be in light transmission state.Also can be that two kinds of backlights are not luminous or all luminous.
Display of the present invention can be used for products such as clock and watch, it (is that background is light tight that the date that can be set Saturday is shown as the green word of black matrix, the word light that reveals the green), it (is that background is light tight that the date on Sunday is shown as black matrix The Scarlet Letter, the saturating ruddiness of word), other date be shown as conventional white gravoply, with black engraved characters, can be this moment no backlight.
Liquid crystal display of the present invention also can be used for game machine, and for example, integration reaches certain interval, and mark is shown in red etc.
Liquid crystal display of the present invention also can be used for the stock information machine, and for example, index reaches certain interval, shown in red or green of index etc.
LCD of the present invention not only can be used for clock and watch product, game machine, stock handset, can also make display apparatus module, embeds on other electric equipment products, as refrigerator, air-conditioning, treadmill etc.
Claims (10)
1, a kind of LCD comprises backlight, LCD module and display driver circuit, it is characterized in that:
Described backlight comprises the light source of at least a color;
Described LCD module comprises N characters/graphics display block and a background section;
Described display driver circuit comprises the characters/graphics driving circuit that is used for controlling described N each display block state of characters/graphics display block, the background area segment drive circuit that is used to control described background section state, and the backlight source driving circuit that is used to control described backlight duty;
Wherein, at any one time, when described characters/graphics driving circuit activates into first state with M display block in described N the characters/graphics display block, described background area segment drive circuit and described characters/graphics driving circuit activate into second state with a remaining N-M display block in described background section and described N the characters/graphics display block simultaneously, and to have a kind of in first and second states be printing opacity.
2, LCD according to claim 1, it is characterized in that, described display driver circuit is connected with the trigger pip generation unit and display mode is selected and control module, wherein said display mode is selected and control module is used for according to the corresponding display mode of the output signal selection of described trigger pip generation unit, and send the information of selected display mode to described characters/graphics driving circuit, background area segment drive circuit and backlight source driving circuit are to control described characters/graphics driving circuit, the operation of background area segment drive circuit and backlight source driving circuit.
3, LCD according to claim 1 is characterized in that, described background section is made up of the zonule of a plurality of mutual electrical connections on the LCD display plane.
4, LCD according to claim 2 is characterized in that, described trigger pip generation unit comprises clock module, is used for selecting display mode according to the time period parameter.
5, LCD according to claim 2 is characterized in that, described trigger pip generation unit comprises the surround lighting detection module, is used for selecting corresponding display mode according to the surround lighting parameter.
6, LCD according to claim 2 is characterized in that, described trigger pip generation unit comprises the environment temperature detection module, is used for selecting display mode according to the environment temperature parameter.
7, LCD according to claim 2 is characterized in that, described trigger pip generation unit comprises the user interface circuit that is used to receive user instruction, enables the Instruction Selection display mode according to the user.
8, LCD according to claim 7 is characterized in that, described display driver circuit is connected with storer or external memory interface circuit.
9, LCD according to claim 8 is characterized in that, stores games or ad content in the described storer.
10, according to any one described LCD among the claim 1-9, it is characterized in that, described backlight comprises the first kind of color being controlled by backlight source driving circuit and the backlight of second color, and at least one sees through the liquid crystal display district that is in light transmission state two kinds of backlights.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101241607A CN101419347A (en) | 2007-10-26 | 2007-10-26 | Lcd |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101241607A CN101419347A (en) | 2007-10-26 | 2007-10-26 | Lcd |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101419347A true CN101419347A (en) | 2009-04-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007101241607A Pending CN101419347A (en) | 2007-10-26 | 2007-10-26 | Lcd |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101789233A (en) * | 2010-01-14 | 2010-07-28 | 宇龙计算机通信科技(深圳)有限公司 | Image displaying method for mobile terminal and mobile terminal |
| CN103456273A (en) * | 2012-05-31 | 2013-12-18 | 哈曼国际工业有限公司 | Display system for displaying a signal parameter and related text |
| CN109324451A (en) * | 2018-09-12 | 2019-02-12 | 东莞通华液晶有限公司 | A kind of positive and negative figure conversion display liquid crystal display and upper and lower polarizer press the display methods of positive negative chart-pattern configuration |
-
2007
- 2007-10-26 CN CNA2007101241607A patent/CN101419347A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101789233A (en) * | 2010-01-14 | 2010-07-28 | 宇龙计算机通信科技(深圳)有限公司 | Image displaying method for mobile terminal and mobile terminal |
| CN103456273A (en) * | 2012-05-31 | 2013-12-18 | 哈曼国际工业有限公司 | Display system for displaying a signal parameter and related text |
| CN109324451A (en) * | 2018-09-12 | 2019-02-12 | 东莞通华液晶有限公司 | A kind of positive and negative figure conversion display liquid crystal display and upper and lower polarizer press the display methods of positive negative chart-pattern configuration |
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Open date: 20090429 |