CN101819405B - Electronic clock or watch with changeable display color - Google Patents

Electronic clock or watch with changeable display color Download PDF

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Publication number
CN101819405B
CN101819405B CN 201010044404 CN201010044404A CN101819405B CN 101819405 B CN101819405 B CN 101819405B CN 201010044404 CN201010044404 CN 201010044404 CN 201010044404 A CN201010044404 A CN 201010044404A CN 101819405 B CN101819405 B CN 101819405B
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China
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led
color
stroke
time
clock
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CN 201010044404
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CN101819405A (en
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冯启祥
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Shenzhen Qiangda Industrial Co ltd
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Shenzhen Qiangda Industrial Co ltd
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Abstract

The invention discloses an electronic clock or watch with changeable display color. An LED color change control circuit is arranged in an electronic clock or an electronic watch; the LED color change control circuit is connected with an LED clock chip U1; the LED clock chip U1 is connected with an LED for displaying time digits and an LED severing as a backlight source; the LED color change control circuit controls different combinations of red, green and blue LEDs and controls the change of current strength of the LEDs of the three colors so that the three LEDs emit rays with different strength to form different colors, the time on the electronic clock or watch is displayed with different colors and changes different colors continuously or discontinuously. The time digits or pointers of the electronic clock or watch can be displayed with colors and can change the colors continuously or discontinuously, so the electronic clock or watch has strong dynamic display effect and ornament.

Description

The electronic clock of changeable display color, table
[technical field]
The present invention relates to electronic clock or electronic watch, the color that particularly relates to the demonstration of a kind of time figure that makes electronic clock or electronic watch or pointer constantly carries out electronic clock, the table of the changeable display color of conversion.
[background technology]
At present, the clock by DC power supply has been widely used in office, family or public arena.This electronic clock is because time showing is directly perceived, and punctual timing has brightness again and shows, thereby brings convenience for people live.Existing electronic clock or electronic watch mainly comprise LED digital clock or table, are numeral backlight or pointer indication electronic clock, are LCD clock backlight and LED electronic watch etc. with LED with LED.Just as known, existing electronic clock, table all are that single black or a kind of color shows, the demonstration of this static state only has single time display function, dull coloring not only, lack variation, lack innervation and individual character, and do not have any sight, can't with colorful life and environment coordination, also can't satisfy the diversified demand in market.
[summary of the invention]
The present invention is intended to address the above problem, and provide a kind of electronic clock, table of changeable display color, it can be shown time figure or the pointer of electronic clock or electronic watch by different color, and can select fixed color and conversion color according to environment and individual demand, thereby have dynamic display effect and sight.
For achieving the above object, the invention provides a kind of electronic clock of changeable display color, table, it is to be provided with a color transformed control circuit of LED in electronic clock or electronic watch, the color transformed control circuit of this LED is connected with LED clock chip U1, LED clock chip U1 then with the LED that shows time figure, LED as backlight links to each other, the color transformed control circuit of described LED is red by control, green, the various combination of blue three kinds of LED and control the variation of the strength of current of three kinds of color LED, make three kinds of LED send the different light of various powers and form different colors, and make described electronic clock, time on the table shows with different colors, and can continuously or carry out the conversion of different color discontinuously.
Electronic clock or electronic watch comprise with LED do display device electronic clock, be numeral backlight or pointer indication electronic clock, be LCD clock and LED electronic watch backlight with LED with LED.
The color transformed control circuit of LED comprises the color LED control chip, operating key and triode or field effect transistor Q2, Q4, Q6, Q3, Q5, Q7, wherein, operating key is arranged on electronic clock or the electronic watch, and be connected with the color LED control chip, described triode or field effect transistor Q2, Q4, Q6, Q3, Q5, Q7 respectively with color LED control chip U2, each the time figure stroke port SEG and the LED clock chip U1 that show each figure of eight LED lamp among LED lamp LED1~LED4 connect, described each time figure stroke is by red, green, blue three-color LED is formed, each time figure stroke port SEG then is connected with each figure of eight LED lamp (), LED clock chip U1 is by controlling the anodal level that a plurality of time figure stroke port SEG1~SEG7 control LED time figure stroke, color LED control chip U2 controls the negative pole level of LED time figure stroke by the com port of control LED clock chip U1, and color LED control chip U2 exports three tunnel different pulse signals by operating key control, signal with varying strength passes through control triode or field effect transistor Q3 respectively, Q5, ending of Q7 controlled red with conducting, green, the electric current of blue three-color LED, make LED send the different light of various powers, the time figure stroke of the LED that shows time figure is shown with different colors.
In another program of the present invention, the color transformed control circuit of LED comprises color LED control chip U2, operating key and triode or field effect transistor Q1, Q2, Q3, Q4, Q5, Q8, wherein, operating key is arranged on electronic clock or the electronic watch, and be connected with color LED control chip U2, described triode or field effect transistor Q1, Q2, Q3, Q4, Q5, Q8 respectively with color LED control chip U2, each the time figure stroke port SEG and the clock chip U1 that show each figure of eight LED lamp among LED lamp LED1~LED4 connect, described each time figure stroke is by red, green, blue three-color LED is formed, each time figure stroke port SEG then is connected with the demonstration of each figure of eight LED lamp, LED clock chip U1 is by the negative pole level of a plurality of time figure stroke port S1~S7 control LED time figure stroke, color LED control chip U2 controls the anodal level of LED time figure stroke by the com port of control LED clock chip U1, and color LED control chip U2 exports three tunnel different pulse signals by operating key control, signal with varying strength passes through control triode or field effect transistor Q1 respectively, Q3, ending of Q5 controlled red with conducting, green, the electric current of blue three-color LED, make LED send the different light of various powers, the time figure stroke of the LED that shows time figure is shown with different colors.
The supply voltage of color LED control chip U2 is 3~5V, and the high level of its output is+3V~+ 5 that low level is 0V.
1,3,4 pin of color LED control chip U2 are respectively through current-limiting resistance R28, R27, R26 and triode or field effect transistor Q2, Q3, Q4, Q5, Q6, Q7 connect, 5 pin of color LED control chip U2 are connected with operating key, 2 pin ground connection, triode or field effect transistor Q2, Q3, the base stage of Q4 is connected with com port.
In another program of the present invention, 1,3,4 pin of color LED control chip U2 are respectively through current-limiting resistance R28, R27, R26 and triode or field effect transistor Q1, Q2, Q3, Q4, Q5, Q8 connect, 5 pin of color LED control chip U2 are connected with operating key 21,2 pin ground connection, triode or field effect transistor Q2, Q4, Q8 base stage are connected with com port.
In another scheme of the present invention, the color transformed control circuit of LED comprises color LED control chip U3, operating key and current-limiting resistance R7, R8, R9, wherein, operating key is arranged on electronic clock or the electronic watch, and be connected with color LED control chip U3, color LED control chip U3 is respectively through current-limiting resistance R7, R8, R9 is with to produce control backlight red, green, blue three-color LED connects, color LED control chip U3 exports three tunnel different pulse signals by operating key 22 controls, control is red after the current-limiting resistance current limliting, green, the different brightness of blue three-color LED and combination thereof, and the color that changes LED and dial scale and pointer shows, and the automatic conversion between different color.
The versicolor control mode of the LED lamp of color LED control chip U2 LED1~LED4 is: when the time figure stroke port SEG1~SEG7 of each LED lamp and com port are high level, light, otherwise do not work for one among the stroke a~g of each LED lamp; When a stroke of each LED lamp is lighted, color LED control chip U2 exports the signal of three road varying strengths, conducting by control triode or field effect transistor Q3, Q5, Q7 with end, thereby the size of current of three kinds of color LED is flow through in control respectively, the stroke of lighting of LED lamp LED1~LED4 just shows with a kind of color or with certain mixed color, and shown color is three kinds of basic colors of red, green, blue or a kind of by in two or three green grass or young crops that mixes in the red, green, blue, purple, white, the Huang Si kind blend color.
In another scheme of the present invention, the versicolor control mode of the LED lamp of color LED control chip U2 LED1~LED4 is: when the time figure stroke port SEG1~SEG7 of each LED lamp and com port are low level, light, otherwise do not work for one among the stroke a~g of each LED lamp; When a stroke of each LED lamp is lighted, color LED control chip U2 exports the signal of three road varying strengths, conducting by control triode or field effect transistor Q1, Q3, Q5 with end, thereby the size of current of three kinds of color LED is flow through in control respectively, the stroke of lighting of LED lamp LED1~LED4 just shows with a kind of color or with certain mixed color, and shown color is three kinds of basic colors of red, green, blue or a kind of by in two or three green grass or young crops that mixes in the red, green, blue, purple, white, the Huang Si kind blend color.
Contribution of the present invention is, it has effectively changed the display mode of the solid color of traditional electrical secondary clock, table.The present invention can show time figure or the pointer of electronic clock or electronic watch with colour, and the color that shows can be selected according to environment and individual demand, it both can be certain fixing color, also can be constantly or conversion color discontinuously, thereby have very strong dynamic display effect and sight.The invention enables the demonstration of electronic clock, table to show as mobile light and gorgeous color, and can satisfy various individual demands and coordinate mutually with environment by the selection color, also can releive from the pressure of actual life.
[description of drawings]
Fig. 1 is embodiment 1 circuit theory diagrams of color transformed control of a time figure stroke of LED lamp of the present invention, and wherein, Figure 1A is the color transformed control circuit schematic diagram of LED, and Figure 1B is LED clock chip schematic diagram, and Fig. 1 C is LED lamp schematic diagram.
Fig. 2 is embodiment 2 circuit theory diagrams of color transformed control of a time figure stroke of LED lamp of the present invention, and wherein, Fig. 2 A is the color transformed control circuit schematic diagram of LED, and Fig. 2 B is LED clock chip schematic diagram, and Fig. 2 C is LED lamp schematic diagram.
Fig. 3 be of the present invention be embodiment 3 circuit theory diagrams of the color transformed control of numeral backlight or pointer indication electronic clock with LED.
Fig. 4 is electronic clock profile synoptic diagram of the present invention, wherein, Fig. 4 A is for LED being numeral backlight indication electronic clock embodiment synoptic diagram, and Fig. 4 B is for being pointer electronic clock embodiment synoptic diagram backlight with LED, and Fig. 4 C is for being LCD electronic clock embodiment synoptic diagram backlight with LED.
[embodiment]
The following example is to further explanation of the present invention and explanation, and the present invention is not constituted any limitation.
Embodiment 1
Present embodiment will be described circuit and the principle thereof of display color conversion of making the electronic clock of display device with LED in conjunction with Figure 1A~Fig. 1 C, and Figure 1A, 1B, 1C are respectively the fractionation circuit of this circuit.What present embodiment provided is that a LED lamp has four com ports example of anode drive altogether.For ease of describing and understanding, present embodiment is that example is described with a time figure stroke of a LED1 lamp only.Referring to Fig. 1 C, wherein show four LED lamp LED1~LED4 that can show as the time figure of the 12:08 among Fig. 4 A, each LED lamp is the figure of eight, constituted by a, b, c, d, e, f, seven strokes of g, the combination of different strokes can form arabic numeral 0~9, is to be formed by stroke a, b, c, d, six strokes of f, g as numeral 9.The corresponding time figure stroke port SEG of each stroke, the LED1 lamp is provided with seven time figure stroke port SEG1~SEG7 altogether, from top to bottom sequence list is shown SEG03, SEG02, SEG04, SEG03, SEG04, SEG0 (lacking), SEG03 in Fig. 1 C, and they correspond respectively to seven stroke a, b, c, d, e, f, g.Each stroke correspondence is provided with a red LED, a blue led and a green LED, and they are distributed on the same circumference, come the demonstration time in that ad-hoc location is luminous with it.Figure 1A is the circuit theory diagrams of the first stroke a of LED1 lamp.The present invention is applicable to electronic clock or the electronic watch that various timing are used, comprise with LED do display device electronic clock, be numeral backlight or pointer indication electronic clock, be LCD clock and LED electronic watch backlight with LED with LED.
Main points of the present invention are, in electronic clock 10, be provided with a color transformed control circuit 20 of LED, this circuit is shown in Figure 1A, it comprises color LED control chip U2, operating key 21 and triode or field effect transistor Q2, Q4, Q6, Q3, Q5, Q7, wherein, color LED control chip U2 is by commercially available, in this example, it adopts 2095 chips, also can color LED control chip U2 and LED clock chip be become one by writing software.The supply voltage of this color LED control chip U2 is 3~5V, the high level of its output is+and 3V~+ 5V, low level is 0V.Operating key 21 is push type or pushing-type key, and it is arranged on electronic clock 10 tops, and is connected through 5 pin of resistance R 25 with color LED control chip U2.Described triode Q2, Q4, Q6, Q3, Q5, Q7 can be all triode, or are all field effect transistor, also can be shown in Figure 1A, and Q2 wherein, Q4, Q6 adopt triode, and Q3, Q5, Q7 adopt field effect transistor, all can reach effect same.Among Figure 1A, triode Q2, Q4, the base stage of Q6 is also received the COM port or COM device or COM1 of clock chip U1, and triode Q2, Q4, Q6 respectively with field effect transistor Q3, Q5, the collector series connection of Q7, field effect transistor Q3, Q5, the base stage of Q7 then respectively with 1 of color LED control chip U2,3,4 pin connect, field effect transistor Q3, Q5, the emitter of Q7 respectively and receive the negative pole of the first stroke a of LED lamp LED1, the red LED (RED) of each time figure stroke color of demonstration of each figure of eight LED lamp, green LED (GREEN), the positive pole of blue led (RLUE) is also received clock IC output port SEG03.
Described LED clock chip is by the anodal level of the digital stroke port SEG03 control LED lamp LED1 very first time numeral stroke a of the first stroke a, this positive pole level is generally+3V~+ 5V, and color LED control chip U2 controls the negative pole level of very first time numeral stroke a by the COM2 mouth of control LED clock chip U1, this negative pole level is 0V, and color LED control chip U2 exports three tunnel different pulse signals by operating key 21 controls, signal with varying strength passes through control field effect transistor Q3 respectively, Q5, ending of Q7 controlled red with conducting, green, the electric current of blue three-color LED, make LED send the different light of various powers, the time figure stroke of the LED that shows time figure is shown with different colors.Specifically, as the digital stroke port SEG03 of very first time of LED lamp LED1 numeral stroke a and when anode port COM2 is high level altogether, the stroke a of LED lamp LED1 lights, otherwise does not work; When stroke a lights, color LED control chip U2 exports the signal of three road varying strengths, conducting by control triode or field effect transistor Q3, Q5, Q7 with end, thereby the size of current of three kinds of color LED is flow through in control respectively, the stroke a that lights of LED lamp LED1 just shows with a kind of monochrome or with certain color mixture, shown color can be a kind of in three kinds of basic colors of red, green, blue, also can be a kind of by in two or three green grass or young crops that mixes in the red, green, blue, purple, white, the Huang Si kind blend color.
The principle of work of present embodiment 1 can be described below in conjunction with Figure 1A~Fig. 1 C:
When the 1 pin output high level signal of color LED control chip U2, during 3,4 pin output low levels, field effect transistor Q3 conducting, Q5, Q7 end, and the very first time numeral stroke a of LED1 shows red.
When the 3 pin output high level signal of color LED control chip U2, during 1,4 pin output low levels, field effect transistor Q5 conducting, Q3, Q7 end, and the very first time numeral stroke a of LED1 shows blue look.
When the 4 pin output high level signal of color LED control chip U2, during 1,3 pin output low levels, field effect transistor Q7 conducting, Q5, Q3 end, and the very first time numeral stroke a of LED1 shows green.
When 1, the 3 pin output high level signal of color LED control chip U2, during 4 pin output low levels, field effect transistor Q3, Q5 conducting, Q7 ends, and the very first time numeral stroke a of LED1 shows purple (blueness+redness).
When 1, the 4 pin output high level signal of color LED control chip U2, during 3 pin output low levels, field effect transistor Q3, Q7 conducting, Q5 ends, and the very first time numeral stroke a of LED1 shows yellow (green+redness).
When 3, the 4 pin output high level signal of color LED control chip U2, during 1 pin output low level, field effect transistor Q5, Q7 conducting, Q3 ends, and the very first time numeral stroke a of LED1 shows cyan (blueness+green).
When 1,3, the 4 pin output high level signal of color LED control chip U2, field effect transistor Q3, Q5, Q7 conducting, the very first time numeral stroke a display white (blueness+green+redness) of LED1.
When 1,3,4 pin of color LED control chip U2 are exported the level that gradually changes, field effect transistor Q3, Q5, Q7 conduction and cut-off time change, the electric current that flows through three kinds of color LED lamps respectively also changes, and the very first time numeral stroke a of LED1 just shows with the color that difference changes.
Present embodiment also is applicable to the LED electronic watch.
Embodiment 2
Present embodiment will be described circuit and the principle thereof of display color conversion of making the electronic clock of display device with LED in conjunction with Fig. 2 A~Fig. 2 C, and Fig. 2 A, 2B, 2C are respectively the fractionation circuit of this circuit.What present embodiment provided is the example that a LED lamp has two com port common cathodes to drive.For ease of describing and understanding, present embodiment is that example is described with a time figure stroke of a LED1 lamp only.Referring to Fig. 2 C, wherein show four LED lamp LED1~LED4 that can show as the time figure of the 12:08 among Fig. 4 A, each LED lamp is the figure of eight, constituted by a, b, c, d, e, f, seven strokes of g, the combination of different strokes can form arabic numeral 0~9, is to be formed by stroke a, b, c, d, six strokes of f, g as numeral 9.The corresponding time figure stroke port S of each stroke, the LED1 lamp is provided with seven time figure stroke port S1~S7 altogether, and they correspond respectively to seven stroke a, b, c, d, e, f, g.Each stroke correspondence is provided with a red LED, a blue led and a green LED, and they are distributed on the same circumference, come the demonstration time in that ad-hoc location is luminous with it.Fig. 2 A is the circuit theory diagrams of the first stroke a of LED1 lamp.
The present embodiment main points are, in electronic clock 10, be provided with a color transformed control circuit 20 of LED, this circuit is shown in Fig. 2 A, it comprises color LED control chip U2, operating key 21 and triode Q1, Q2, Q3, Q4, Q5, Q8, wherein, color LED control chip U2 and operating key 21 are with embodiment 1.The base stage of described triode Q2, Q4, Q8 is also received COM port or COM device or COM1, its collector respectively and receive the positive pole of LED lamp LED1, the negative pole of the red LED (RED) of each time figure stroke color of demonstration of each figure of eight LED lamp, green LED (GREEN), blue led (RLUE) is received clock IC output port S1.
Described LED clock chip U1 is by the negative pole level of seven time figure stroke port S1~S7 control LED time figure stroke, color LED control chip U2 controls the anodal level of LED time figure stroke by the COM port or COM device or COM1 of control LED clock chip U1, and color LED control chip U2 exports three tunnel different pulse signals by operating key 21 controls, signal with varying strength passes through control triode Q1 respectively, Q3, ending of Q5 controlled red with conducting, green, the electric current of blue three-color LED, make LED send the different light of various powers, the time figure stroke of the LED that shows time figure is shown with different colors.Specifically, when the digital stroke port S1 of very first time of LED lamp LED1 numeral stroke a and COM1 were high level, the stroke a of LED lamp LED1 lighted, otherwise does not work; When stroke a lights, color LED control chip U2 exports the signal of three road varying strengths, conducting by control triode Q1, Q3, Q5 with end, thereby the size of current of three kinds of color LED is flow through in control respectively, the stroke a that lights of LED lamp LED1 just shows with a kind of monochrome or with certain color mixture, shown color can be a kind of in three kinds of basic colors of red, green, blue, also can be a kind of by in two or three green grass or young crops that mixes in the red, green, blue, purple, white, the Huang Si kind blend color.
The principle of work of present embodiment 2 can be described below in conjunction with Fig. 2 A~Fig. 2 C:
When the 1 pin output low level of color LED control chip U2, during 3,4 pin output high level, triode Q1 conducting, Q3, Q5 end, and the very first time numeral stroke a of LED1 shows red.
When the 3 pin output low level signals of color LED control chip U2, during 1,4 pin output high level, triode Q3 conducting, Q1, Q5 end, and the very first time numeral stroke a of LED1 shows blue.
When the 4 pin output low level signals of color LED control chip U2, during 1,3 pin output high level, triode Q5 conducting, Q1, Q3 ends, and the very first time numeral stroke a of LED1 shows green.
When 1, the 3 pin output low level signals of color LED control chip U2, during 4 pin output high level, triode Q1, Q3 conducting, Q5 ends, and the very first time numeral stroke a of LED1 shows purple (blueness+redness).
When 1, the 4 pin output low level signals of color LED control chip U2, during 3 pin output high level, triode Q1, the Q5 conducting, Q3 ends, and the very first time numeral stroke a of LED1 shows yellow (green+redness).
When 3, the 4 pin output low level signals of color LED control chip U2, during 1 pin output high level, triode Q3, Q5 conducting, Q1 ends, and the very first time numeral stroke a of LED1 shows cyan (blueness+green).
When 1,3, the 4 pin output low level signals of color LED control chip U2, triode Q1, Q3, Q5 conducting, the very first time numeral stroke a display white (blueness+green+redness) of LED1.
When 1,3,4 pin of color LED control chip U2 are exported the level that gradually changes, triode Q1, Q3, Q5 conduction and cut-off time also change, the electric current that flows through three kinds of color LED lamps respectively just changes, and the very first time numeral stroke a of LED1 shows with the color that difference changes.
Embodiment 3
It is numeral backlight or color transformed control circuit and the principle of pointer indication electronic clock that present embodiment will be described LED in conjunction with Fig. 3.
Be to be to be provided with a color transformed control circuit 20 of LED in the pointer electronic clock 10 backlight with LED shown in numeral backlight indication electronic clock or Fig. 4 B with LED shown in Fig. 4 A, this circuit as shown in Figure 3, it comprises color LED control chip U3, operating key 22 and current-limiting resistance R7, R8, R9, wherein, operating key 22 is arranged on electronic clock or the electronic watch 10, and be connected with color LED control chip U3, color LED control chip U3 is respectively through current-limiting resistance R7, R8, R9 is with to produce control backlight red, green, blue three-color LED connects, color LED control chip U3 exports three tunnel different pulse signals by operating key 22 controls, control is red after the current-limiting resistance current limliting, green, the different brightness of blue three-color LED and combination thereof, and the color that changes LED and dial scale and pointer shows, and the automatic conversion between different color.The resulting color mixture of the various combination of red, green, blue three-color LED repeats no more here with embodiment 1.
For being that the circuit of LCD electronic clock backlight and principle are with this embodiment with LED.
Although disclose by the present invention of above embodiment, scope of the present invention is not limited thereto, do not departing under the condition of the present invention design, more than each member can replace with the similar or equivalent element that affiliated technical field personnel understand.

Claims (9)

1. the electronic clock of a changeable display color, table, it is characterized in that, in electronic clock or electronic watch (10), be provided with a color transformed control circuit of LED (20), the color transformed control circuit of described LED (20) is connected with LED clock chip U1, LED clock chip U1 then with the LED that shows time figure, LED as backlight links to each other, the color transformed control circuit of this LED (20) comprises color LED control chip U2, operating key (21) and triode or field effect transistor Q2, Q4, Q6, Q3, Q5, Q7, wherein, operating key (21) is arranged on electronic clock or the electronic watch (10), and be connected with color LED control chip U2, described triode or field effect transistor Q2, Q4, Q6, Q3, Q5, Q7 respectively with color LED control chip U2, each the time figure stroke port SEG and the LED clock chip U1 that show each figure of eight LED lamp among LED lamp LED1~LED4 connect, described each time figure stroke is by red, green, blue three-color LED is formed, each time figure stroke port SEG then is connected with each figure of eight LED lamp, LED clock chip U1 is by controlling the anodal level that a plurality of time figure stroke port SEG1~SEG7 control LED time figure stroke, color LED control chip U2 controls the negative pole level of LED time figure stroke by the com port of control LED clock chip U1, and color LED control chip U2 exports three tunnel different pulse signals by operating key (21) control, signal with varying strength passes through control triode or field effect transistor Q3 respectively, Q5, ending of Q7 controlled red with conducting, green, the electric current of blue three-color LED, make LED send the different light of various powers, the time figure stroke of the LED that shows time figure is shown with different colors.
2. the electronic clock of a changeable display color, table, it is characterized in that, in electronic clock or electronic watch (10), be provided with a color transformed control circuit of LED (20), the color transformed control circuit of described LED (20) is connected with LED clock chip U1, LED clock chip U1 then with the LED that shows time figure, LED as backlight links to each other, the color transformed control circuit of this LED (20) comprises color LED control chip U2, operating key (21) and triode or field effect transistor Q1, Q2, Q3, Q4, Q5, Q8, wherein, operating key (21) is arranged on electronic clock or the electronic watch (10), and be connected with color LED control chip U2, described triode or field effect transistor Q1, Q2, Q3, Q4, Q5, Q8 respectively with color LED control chip U2, each the time figure stroke port SEG and the LED clock chip U1 that show each figure of eight LED lamp among LED lamp LED1~LED4 connect, described each time figure stroke is by red, green, blue three-color LED is formed, each time figure stroke port SEG then is connected with the demonstration of each figure of eight LED lamp, LED clock chip U1 is by the negative pole level of a plurality of time figure stroke port S1~S7 control LED time figure stroke, color LED control chip U2 controls the anodal level of LED time figure stroke by the com port of control LED clock chip U1, and color LED control chip U2 exports three tunnel different pulse signals by operating key (21) control, signal with varying strength passes through control triode or field effect transistor Q1 respectively, Q3, ending of Q5 controlled red with conducting, green, the electric current of blue three-color LED, make LED send the different light of various powers, the time figure stroke of the LED that shows time figure is shown with different colors.
3. the electronic clock of changeable display color as claimed in claim 1, table is characterized in that, described electronic clock or electronic watch (10) also comprise with LED and be pointer backlight indication electronic clock, be LCD clock backlight with LED.
4. the electronic clock of changeable display color as claimed in claim 1, table is characterized in that, the supply voltage of described color LED control chip U2 is 3~5V, the high level of its output is+and 3V~+ 5V, low level is 0V.
5. the electronic clock of changeable display color as claimed in claim 3, table, it is characterized in that, 1,3,4 pin of described color LED control chip U2 are respectively through current-limiting resistance R28, R27, R26 and triode or field effect transistor Q2, Q3, Q4, Q5, Q6, Q7 connect, 5 pin of color LED control chip U2 are connected with operating key (21), 2 pin ground connection, and the base stage of triode or field effect transistor Q2, Q3, Q4 is connected with com port.
6. the electronic clock of changeable display color as claimed in claim 2, table, it is characterized in that, 1,3,4 pin of described color LED control chip U2 are respectively through current-limiting resistance R28, R27, R26 and triode or field effect transistor Q1, Q2, Q3, Q4, Q5, Q8 connect, 5 pin of color LED control chip U2 are connected with operating key (21), 2 pin ground connection, triode or field effect transistor Q2, Q4, Q8 base stage are connected with com port.
7. the electronic clock of changeable display color as claimed in claim 1 or 2, table, it is characterized in that, the color transformed control circuit of described LED (20) comprises color LED control chip U3 operating key (22) and current-limiting resistance R7, R8, R9, wherein, operating key (22) is arranged on electronic clock or the electronic watch (10), and be connected with color LED control chip U3, color LED control chip U3 is respectively through current-limiting resistance R7, R8, R9 is with to produce control backlight red, green, blue three-color LED connects, color LED control chip U3 exports three tunnel different pulse signals by operating key 22 controls, control is red after the current-limiting resistance current limliting, green, the different brightness of blue three-color LED and combination thereof, and the color that changes LED and dial scale and pointer shows, and the automatic conversion between different color.
8. the electronic clock of changeable display color as claimed in claim 7, table, it is characterized in that, the versicolor control mode of the LED lamp of described color LED control chip U2 LED1~LED4 is: when the time figure stroke port SEG1~SEG7 of each LED lamp and com port are high level, light, otherwise do not work for one among the stroke a~g of each LED lamp; When a stroke of each LED lamp is lighted, color LED control chip U2 exports the signal of three road varying strengths, conducting by control triode or field effect transistor Q3, Q5, Q7 with end, thereby the size of current of three kinds of color LED is flow through in control respectively, the stroke of lighting of LED lamp LED1~LED4 just shows with a kind of color or with certain mixed color, and shown color is three kinds of basic colors of red, green, blue or a kind of by in two or three green grass or young crops that mixes in the red, green, blue, purple, white, the Huang Si kind blend color.
9. the electronic clock of changeable display color as claimed in claim 8, table, it is characterized in that, the versicolor control mode of the LED lamp of described color LED control chip U2 LED1~LED4 is: as the digital stroke port SEG03 of very first time of LED lamp LED1 numeral stroke a and when anode port COM2 is high level altogether, the stroke a of LED lamp LED1 lights, otherwise does not work; When a stroke of each LED lamp is lighted, color LED control chip U2 exports the signal of three road varying strengths, conducting by control triode or field effect transistor Q1, Q3, Q5 with end, thereby the size of current of three kinds of color LED is flow through in control respectively, the stroke of lighting of LED lamp LED1~LED4 just shows with a kind of color or with certain mixed color, and shown color is three kinds of basic colors of red, green, blue or a kind of by in two or three green grass or young crops that mixes in the red, green, blue, purple, white, the Huang Si kind blend color.
CN 201010044404 2010-01-13 2010-01-13 Electronic clock or watch with changeable display color Expired - Fee Related CN101819405B (en)

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CN206546694U (en) * 2017-03-06 2017-10-10 福建木尚品电子有限公司 A kind of display device
WO2022047667A1 (en) * 2020-09-02 2022-03-10 祝君芬 Lcd and led hybrid display screen and lcd and led hybrid screen clock

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CN2881733Y (en) * 2005-11-23 2007-03-21 陈玉豹 Time indicating device of indicating time order by different colour
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