Fast Method for Evaluating and Optimizing the Scattering Efficiency of Light Guide Plate Dots

Wenwen Yu; Jian Wang; Qi Zhang; Xuekun Wang; Cuncun Hong; Weiying Qian; Jianjun Cao; Shumei Gao

doi:10.3788/LOP57.072201

Laser & Optoelectronics Progress, Volume. 57, Issue 7, 072201(2020)

Fast Method for Evaluating and Optimizing the Scattering Efficiency of Light Guide Plate Dots

Wenwen Yu¹, Jian Wang², Qi Zhang³, Xuekun Wang¹, Cuncun Hong¹, Weiying Qian¹, Jianjun Cao¹, and Shumei Gao^1、*

¹Jiangsu Provincial Research Center of Light Industrial Opto-Electronic Engineer and Technology, School of Physics, Jiangnan University, Wuxi, Jiangsu 214122, China

²Suzhou Tianlu Technology Company LTD., Suzhou, Jiangsu 215500, China

³Jiangsu Xinguanglian Technology Company LTD., Wuxi, Jiangsu 214122, China

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Figures & Tables(10)

Fig. 1. Cross section of the light guide plate

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Fig. 2. Relationship between reflectivity and the angle of incidence

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Fig. 3. BLM structure diagram

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Fig. 4. Triangular prismatic dot structure

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Fig. 5. Illumination distribution of different γ

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Fig. 6. Relationship between γ and η

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Fig. 7. BLM simulation results using four dot structures. (a) Hot-embossing; (b) frustum of cone; (c) hemisphere; (d) cone

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Fig. 8. Test results. (a) Actual luminescence effect; (b) 13-point luminance value measured by BM-7A system

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Table 1. Comparison of BLM results before and after optimization
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Table 1. Comparison of BLM results before and after optimization
γ 55° 60° 65°
Original Optimized Original Optimized Original Optimized
η /% 41 39 42 40 41 39
U /% 49 85 37 84 34 83
M 1269957 538353 1269957 489914 1269957 498589

Table 2. BLM simulation uniformity and light-emitting area ratio using four dot structures
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Table 2. BLM simulation uniformity and light-emitting area ratio using four dot structures
Dot structure Hot-embossing Frustum of cone Hemisphere Cone
T /% 100 25 48 42
η /% 35 43 43 43

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Wenwen Yu, Jian Wang, Qi Zhang, Xuekun Wang, Cuncun Hong, Weiying Qian, Jianjun Cao, Shumei Gao. Fast Method for Evaluating and Optimizing the Scattering Efficiency of Light Guide Plate Dots[J]. Laser & Optoelectronics Progress, 2020, 57(7): 072201

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