Micro-touch panel device capable of preventing uneven key brightness and halos caused by over-brightness in the prior art

• Main Authors: LIN, YU, FANG, CHUN-YI, JENG, RUEI-JIE, LIN, CHEN-MING, CAI, DING-SIAN, CHUANG, PAI-HSIANG
• Format: Patent
• Language: Chinese; English
• Published: 16.10.2023
• Subjects: BLASTING; CALCULATING; COMPUTING; COUNTING; ELECTRIC DIGITAL DATA PROCESSING; HEATING; LIGHTING; MECHANICAL ENGINEERING; NON-PORTABLE LIGHTING DEVICES; PHYSICS; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLEEXTERIORS; WEAPONS

A micro-touch panel device includes a circuit board unit, a light shielding frame plate, an optical film unit, a plurality of light shielding sheets and an operation panel unit, which are stacked from the front to the back, and a plurality of LEDs arranged on the circuit board unit. The light-shielding frame plate defines a hollow area surrounding micro-touch keys of the circuit board unit. The plurality of LEDs and the optical film unit are located in the hollow area. The light shielding sheets respectively shield the front sides of the plurality of LEDs. The optical film unit is configured to guide and diffuse the light generated by the plurality of LEDs forward to the operation panel unit. Through the aforementioned structural design, the plurality of LEDs can be prevented from showing uneven brightness bright spots on the operation panel unit, so that all the key parts of the operation panel unit have uniform brightness, thereby preventing the problems of uneven key brightness and halos caused by over-bri