CN207833887U - A kind of electronic equipment - Google Patents
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Abstract
本实用新型公开了一种电子设备，属于电子产品技术领域，包括处理器、系统电池、背光驱动芯片和显示屏，所述系统电池与所述处理器电连接，所述处理器和所述背光驱动芯片分别与所述显示屏电连接，还包括背光供电电池，所述背光供电电池与所述背光驱动芯片电连接，本设计可以为背光驱动芯片提供稳定的背光电流，保证背光驱动芯片输出电流稳定，避免了屏幕背光闪烁的问题。
The utility model discloses an electronic device, which belongs to the technical field of electronic products and comprises a processor, a system battery, a backlight drive chip and a display screen, the system battery is electrically connected to the processor, the processor and the backlight The drive chips are respectively electrically connected to the display screen, and also include a backlight power supply battery, and the backlight power supply battery is electrically connected to the backlight drive chip. This design can provide a stable backlight current for the backlight drive chip to ensure the output current of the backlight drive chip Stable, avoiding the problem of screen backlight flickering.
Description
技术领域technical field
本实用新型涉及电子产品技术领域，特别涉及一种电子设备。The utility model relates to the technical field of electronic products, in particular to an electronic device.
背景技术Background technique
现有电子产品中，背光插黑技术(BBL)可以有效的减小拖影现象，而被广泛应用，背光的供电多采用恒流源驱动屏幕背光LED，由于插黑技术要在极短的时间内提供比较高的亮度，并且背光的打开的时间要和屏幕的刷新率同步，屏幕背光的灯一般都具有工作电流大，电压高等特点。典型的插黑屏幕背光开启时的电流为70mA左右，电压在30V左右。目前背光驱动芯片的供电多采用系统电源供电的方式，即电子产品的电池既要为平台的各个模块供电，又要为背光驱动芯片供电(如附图1所示)。电池低压状态下，需要通过背光驱动芯片升压到较高的电压提供背光供电。往往电池在低压的情况下受限于背光驱动芯片的能力，无法提供稳定的背光电流(如附图2中实际波形L2所示)，从而造成电池低压下背光闪烁的问题。In existing electronic products, backlight black insertion technology (BBL) can effectively reduce the smear phenomenon, and is widely used. The power supply of the backlight mostly uses a constant current source to drive the screen backlight LED, because the black insertion technology needs to be replaced in a very short time. It provides relatively high brightness inside, and the turn-on time of the backlight must be synchronized with the refresh rate of the screen. The screen backlight generally has the characteristics of large operating current and high voltage. When the typical black screen backlight is turned on, the current is about 70mA, and the voltage is about 30V. At present, the power supply of the backlight driver chip mostly adopts the power supply mode of the system power supply, that is, the battery of the electronic product not only supplies power for each module of the platform, but also supplies power for the backlight driver chip (as shown in Figure 1). When the battery is under low voltage, it needs to be boosted to a higher voltage by the backlight driver chip to provide backlight power supply. Often the battery is limited by the ability of the backlight driver chip at low voltage and cannot provide a stable backlight current (as shown in the actual waveform L2 in Figure 2), which causes the problem of backlight flickering at low battery voltage.
实用新型内容Utility model content
本实用新型所要解决的技术问题是：提供一种电子设备，可以为背光驱动芯片提供稳定的背光电流，保证背光驱动芯片输出电流稳定，避免了屏幕闪烁的问题。The technical problem to be solved by the utility model is to provide an electronic device that can provide a stable backlight current for the backlight driver chip, ensure the stability of the output current of the backlight driver chip, and avoid the problem of screen flickering.
为解决上述技术问题，本实用新型的技术方案是：For solving the problems of the technologies described above, the technical solution of the utility model is:
一种电子设备，包括处理器、系统电池、背光驱动芯片和显示屏，所述系统电池与所述处理器电连接，所述处理器和所述背光驱动芯片分别与所述显示屏电连接，还包括背光供电电池，所述背光供电电池与所述背光驱动芯片电连接。An electronic device, comprising a processor, a system battery, a backlight driver chip and a display screen, the system battery is electrically connected to the processor, the processor and the backlight driver chip are respectively electrically connected to the display screen, It also includes a backlight power supply battery, and the backlight power supply battery is electrically connected with the backlight driving chip.
进一步的，所述系统电池与所述处理器之间电连接有用于控制所述系统电池充放电的电源管理芯片。Further, a power management chip for controlling charging and discharging of the system battery is electrically connected between the system battery and the processor.
进一步的，所述背光供电电池与所述背光驱动芯片之间电连接有用于控制所述背光供电电池充放电的充电管理芯片。Further, a charge management chip for controlling charging and discharging of the backlight power supply battery is electrically connected between the backlight power supply battery and the backlight drive chip.
进一步的，所述背光供电电池与所述充电管理芯片之间电连接有电量管理芯片，所述电量管理芯片用于检测所述背光供电电池的电量并将数据传输给所述电源管理芯片。Further, a power management chip is electrically connected between the backlight power supply battery and the charging management chip, and the power management chip is used to detect the power of the backlight power supply battery and transmit data to the power management chip.
进一步的，所述电源管理芯片和所述充电管理芯片分别与外部电源电连接。Further, the power management chip and the charging management chip are respectively electrically connected to an external power source.
进一步的，所述电源管理芯片与所述充电管理芯片电连接，所述外部电源供电能力不足时，所述电源管理芯片向所述充电管理芯片发送充电许可信号，所述背光供电电池优先充电。Further, the power management chip is electrically connected to the charging management chip, and when the power supply capacity of the external power supply is insufficient, the power management chip sends a charging permission signal to the charging management chip, and the backlight power supply battery is preferentially charged.
进一步的，所述背光供电电池的放电时间大于所述系统电池的放电时间。Further, the discharge time of the backlight power supply battery is longer than the discharge time of the system battery.
进一步的，所述系统电池和所述背光供电电池均设置在所述壳体内远离热源的侧部。Further, both the system battery and the backlight power supply battery are arranged at the side of the casing away from the heat source.
进一步的，所述系统电池设在所述壳体内的上侧部，所述背光供电电池设置在所述壳体内的左侧部或右侧部。Further, the system battery is arranged on the upper side of the casing, and the backlight power supply battery is arranged on the left side or the right side of the casing.
进一步的，所述电子设备为虚拟现实产品、增强现实产品或手机。Further, the electronic device is a virtual reality product, an augmented reality product or a mobile phone.
采用了上述技术方案后，本实用新型的有益效果是：After adopting above-mentioned technical scheme, the beneficial effect of the utility model is:
由于本实用新型的一种电子设备包括处理器、系统电池、背光驱动芯片和显示屏，系统电池与处理器电连接，处理器和背光驱动芯片分别与显示屏电连接，还包括背光供电电池，背光供电电池与背光驱动芯片电连接。通过将系统供电和背光供电分离，设置单独为背光驱动芯片供电的背光供电电池，系统电池给除背光驱动芯片以外的模块供电，减小了系统功耗波动对背光驱动芯片的影响，使得背光驱动芯片输入稳定的背光电流，保证背光驱动芯片的输出电流稳定，消除了电池低压状态下屏幕闪烁的问题，从而提高用户的体验感。Because a kind of electronic equipment of the present utility model comprises processor, system battery, backlight drive chip and display screen, system battery is electrically connected with processor, processor and backlight drive chip are respectively electrically connected with display screen, also includes backlight power supply battery, The backlight power supply battery is electrically connected with the backlight driving chip. By separating the system power supply from the backlight power supply and setting a backlight power supply battery for the backlight driver chip alone, the system battery supplies power to modules other than the backlight driver chip, reducing the impact of system power consumption fluctuations on the backlight driver chip, making the backlight driver The chip inputs a stable backlight current to ensure the output current of the backlight driver chip is stable, eliminating the problem of screen flickering when the battery is under low voltage, thereby improving the user experience.
综上所述，本实用新型的一种电子设备，通过向背光驱动芯片输入稳定的电流，保证了背光驱动芯片输出电流的稳定，消除了屏幕闪烁的问题，提高了用户的体验感。In summary, an electronic device of the present invention ensures the stability of the output current of the backlight driver chip by inputting a stable current to the backlight driver chip, eliminates the problem of screen flickering, and improves user experience.
附图说明Description of drawings
图1是现有技术中电子设备的电路原理图；Fig. 1 is the circuit principle diagram of electronic equipment in the prior art;
图2是图1在系统电池低压状态下背光驱动芯片输出电流的实际波形与理想波形；Figure 2 is the actual waveform and ideal waveform of the output current of the backlight driver chip in Figure 1 under the low voltage state of the system battery;
图3是本实用新型电子设备的电路原理图；Fig. 3 is the circuit schematic diagram of the electronic equipment of the present utility model;
图4是本实用新型电子设备的部分结构示意图；Fig. 4 is a partial structural schematic diagram of the electronic equipment of the present invention;
图中，1-壳体，2-系统电池，3-背光供电电池。In the figure, 1-housing, 2-system battery, 3-backlight power supply battery.
具体实施方式Detailed ways
下面结合附图和实施例对本实用新型进一步说明。Below in conjunction with accompanying drawing and embodiment the utility model is further described.
在说明书中，涉及到的“上”、“下”、“左”、“右”等方位均指附图中所示的方位。In the description, directions such as "up", "down", "left", and "right" all refer to the directions shown in the drawings.
如图3和图4共同所示，一种电子设备，包括壳体1，壳体1内设有系统电池2、处理器、背光供电电池3、背光驱动芯片和显示屏，其中，显示屏为液晶显示屏。系统电池2依次与处理器和显示屏电连接，背光供电电池3与背光驱动芯片电连接，背光驱动芯片与显示屏上的背光LED灯电连接，系统工作时，系统电池2为处理器供电，背光供电电池3为背光驱动芯片供电。其中系统电池2与处理器之间电连接有用于控制系统电池2充放电的电源管理芯片，背光供电电池3与背光驱动芯片之间电连接有用于控制背光供电电池3充放电的充电管理芯片。As shown in Figure 3 and Figure 4 together, an electronic device includes a housing 1, and the housing 1 is provided with a system battery 2, a processor, a backlight power supply battery 3, a backlight driving chip and a display screen, wherein the display screen is LCD. The system battery 2 is electrically connected to the processor and the display screen in turn, the backlight power supply battery 3 is electrically connected to the backlight driver chip, and the backlight driver chip is electrically connected to the backlight LED lights on the display screen. When the system is working, the system battery 2 supplies power to the processor. The backlight power supply battery 3 supplies power for the backlight driver chip. A power management chip for controlling charging and discharging of the system battery 2 is electrically connected between the system battery 2 and the processor, and a charging management chip for controlling charging and discharging of the backlight power supply battery 3 is electrically connected between the backlight power supply battery 3 and the backlight driving chip.
如图3和图4共同所示，背光供电电池3与充电管理芯片之间电连接有电量管理芯片，电量管理芯片用于检测背光供电电池3的电量并将数据传输给电源管理芯片。As shown in Figure 3 and Figure 4 together, a power management chip is electrically connected between the backlight power supply battery 3 and the charging management chip, and the power management chip is used to detect the power of the backlight power supply battery 3 and transmit data to the power management chip.
如图3和图4共同所示，电源管理芯片与充电管理芯片电连接，系统电池2电量不足时，电源管理芯片和充电管理芯片分别与外部电源电连接，通过电源管理芯片和充电管理芯片分别给系统电池2和背光供电电池3充电。电源管理芯片接收到电量管理芯片检测的数据判断背光供电电池3电量不足时，电源管理芯片向充电管理芯片发送充电许可信号，背光供电电池3优先充电；当电源管理芯片接收到电量管理芯片检测的数据判断背光供电电池3电量充足时，系统电池2和背光供电电池3共同充电。As shown in Figure 3 and Figure 4, the power management chip is electrically connected to the charging management chip. Charge the system battery 2 and the backlight power supply battery 3. When the power management chip receives the data detected by the power management chip and judges that the power of the backlight power supply battery 3 is insufficient, the power management chip sends a charging permission signal to the charging management chip, and the backlight power supply battery 3 is charged first; When the data judges that the power of the backlight power supply battery 3 is sufficient, the system battery 2 and the backlight power supply battery 3 are jointly charged.
在选择系统电池2及背光供电电池3的容量时，需保证背光供电电池3的放电时间大于系统电池2的放电时间，即Cb1/Ib1>Csys/Isys，其中Cb1为背光供电电池3的容量，Ib1为背光驱动芯片工作电流，Csys为系统电池2的容量，Isys为系统工作电流。保证在系统工作的过程中，背光驱动芯片持续工作，保证电路的正常运行。本实施例中优选Cb1/Ib1>1.5×Csys/Isys。When selecting the capacity of the system battery 2 and the backlight power supply battery 3, it is necessary to ensure that the discharge time of the backlight power supply battery 3 is greater than the discharge time of the system battery 2, that is, C b1 /I b1 >C sys /I sys , where C b1 is the backlight power supply The capacity of the battery 3, I b1 is the operating current of the backlight driver chip, C sys is the capacity of the system battery 2, and I sys is the operating current of the system. Ensure that the backlight driver chip continues to work during the system working process to ensure the normal operation of the circuit. In this embodiment, C b1 /I b1 is preferably >1.5×C sys /I sys .
如图4所示，系统电池2和背光供电电池3均设置在壳体1内远离热源的侧部。由于壳体1靠近人体面部的一侧设置显示屏，远离人体面部的一侧的内部设置处理器，其中热源为处理器，壳体1的下侧部为能够与人体鼻部相贴合的结构，且为能够给系统供电，系统电池2体积容量大，所以系统电池2设在壳体1内的上侧部。背光供电电池3设置在壳体1内的左侧部或右侧部，本实施例中背光供电电池3设置在壳体1内的右侧部，避免了处理器温度过高对系统电池2与背光供电电池3造成损伤，影响其使用寿命。As shown in FIG. 4 , the system battery 2 and the backlight power supply battery 3 are both arranged on the side of the casing 1 away from the heat source. Since the housing 1 is provided with a display screen on the side close to the face of the human body, and a processor is installed on the side away from the face of the human body, wherein the heat source is the processor, and the lower side of the housing 1 is a structure that can fit the nose of the human body , and in order to be able to supply power to the system, the system battery 2 has a large volume capacity, so the system battery 2 is arranged on the upper side of the casing 1 . The backlight power supply battery 3 is arranged on the left side or the right side of the housing 1. In this embodiment, the backlight power supply battery 3 is arranged on the right side of the housing 1, so as to avoid the excessive temperature of the processor from affecting the system battery 2 and the battery. The backlight power supply battery 3 causes damage, which affects its service life.
本实实施例中的电子设备可以为虚拟现实产品、增强现实产品、手机或其它应用背光插黑技术的电子产品。The electronic device in this embodiment may be a virtual reality product, an augmented reality product, a mobile phone, or other electronic products using backlight black insertion technology.
本实用新型中的电子设备通过设置为背光驱动芯片单独供电的背光供电电池3，避免了系统功耗的影响，为背光驱动芯片提供了稳定的工作电流，使得背光驱动芯片的输出电流能够如附图2中理想波形L1所示，保证背光LED灯点亮时亮度一致，避免了电池低压状态下屏幕背光闪烁的问题。The electronic equipment in the utility model avoids the influence of the power consumption of the system by setting the backlight power supply battery 3 which is separately powered for the backlight drive chip, and provides a stable working current for the backlight drive chip, so that the output current of the backlight drive chip can be as attached As shown in the ideal waveform L1 in Figure 2, the brightness of the backlight LED is guaranteed to be consistent when it is lit, and the problem of flickering of the screen backlight when the battery is low is avoided.
虽然以上描述了本实用新型的具体实施方式，但是本领域的技术人员应该理解，所描述的实施例仅仅是本实用新型的一部分实施例，而不是全部的实施例，这些仅仅是举例说明，本实用新型的保护范围是由所述权利要求书限定。本领域的技术人员在不背离本实用新型的原理和实质的前提下，在没有经过任何创造性的劳动下，可以对这些实施方式做出多种变更或修改，但这些变更和修改均落入本实用新型的保护范围。Although the specific implementation manners of the present utility model have been described above, those skilled in the art should understand that the described embodiments are only part of the embodiments of the present utility model, rather than all embodiments, and these are only examples. The scope of protection of the utility model is defined by the claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principle and essence of the utility model without any creative work, but these changes and modifications all fall within the scope of this invention. Protection scope of utility model.
Claims (10)
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| CN201721855222.7U CN207833887U (en) | 2017-12-26 | 2017-12-26 | A kind of electronic equipment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111369942A (en) * | 2020-03-26 | 2020-07-03 | 维沃移动通信有限公司 | Driving voltage adjusting method and electronic device |
| TWI736209B (en) * | 2020-04-08 | 2021-08-11 | 香港商冠捷投資有限公司 | Backlight brightness control method and portable display |
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2017
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111369942A (en) * | 2020-03-26 | 2020-07-03 | 维沃移动通信有限公司 | Driving voltage adjusting method and electronic device |
| CN111369942B (en) * | 2020-03-26 | 2022-01-14 | 维沃移动通信有限公司 | Driving voltage adjusting method and electronic device |
| TWI736209B (en) * | 2020-04-08 | 2021-08-11 | 香港商冠捷投資有限公司 | Backlight brightness control method and portable display |
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